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# Obtuse triangle

An obtuse triangle is a triangle that has one obtuse angle (an angle greater than 90°). The side of this house is in the shape of an obtuse triangle. Properties of obtuse triangles Whenever a triangle is classified as obtuse, one of its interior angles has a measure between 90 and 180 degrees An obtuse-angled triangle or obtuse triangle is a type of triangle whose one of the vertex angles is bigger than 90°. An obtuse-angled triangle has one of its vertex angles as obtuse and other angles as acute angles i.e. if one of the angles measure more than 90°, then the sum of the other two angles is less than 90°

### Obtuse triangle - Mat

obtuse Triangle. An obtuse triangle is a triangle that has one obtuse angle. The sum of three interior angles is 180°. So, an obtuse triangle cannot have more than one obtuse angle. Therefore, an obtuse triangle must have one obtuse angle and two acute angles An obtuse triangle (or obtuse-angled triangle) is a triangle with one obtuse angle (greater than 90°) and two acute angles. Since a triangle's angles must sum to 180° in Euclidean geometry , no Euclidean triangle can have more than one obtuse angle An obtuse triangle is a Triangle in which one of the Angles is an Obtuse Angle. (Obviously, only a single Angle in a Triangle can be Obtuse or it wouldn't be a Triangle.) A triangle must be either obtuse, Acute, or Right A triangle is a closed two-dimensional plane figure with three sides and three angles. Based on the sides and the interior angles of a triangle, different types of triangles are obtained and the obtuse-angled triangle is one among them. If one of the interior angles of the triangle is obtuse (i.e. more than 90°), then the triangle is called the obtuse-angled triangle

Obtuse Triangle Definition An obtuse triangle is one that has an angle greater than 90°. Because all the angles in a triangle add up to 180°, the other two angles have to be acute (less than 90°). It's impossible for a triangle to have more than one obtuse angle obtuse triangle (plural obtuse triangles) (geometry) A triangle one of whose angles is obtuse obtuse. Frons polished and weakly punctate, the punctures anteriad the ocellar field sparse and shallow; ocellar triangle arranged to form an obtuse triangle with a slight depression anteriad the median ocellus. In the first case, all 4-gons contain two obtuse angles and two acute angles, so the pseudo-road finishes with an edge of two obtuse. Obtuse triangles are classified into two types: 1) obtuse scalene triangle, and 2) obtuse isosceles triangles. The differences between the types are given below: Types of Obtuse Triangle. Formulas. Area (A) = ½ (b × h), where b = base and h = height. Perimeter (P) = a + b + c, where a, b, c are the measures of three sides An obtuse triangle is any triangle that contains an obtuse angle. Here are some examples: Both triangles are obtuse because they contain an angle greater than 90 degrees. No matter where in the..

Obtuse Triangle: A Triangle where one angle is greater than 90° but less than 180°, and the other two angles are less than 90°. An Obtuse Triangle can be scalene or isosceles An obtuse triangle is a triangle in which one of the angles is an obtuse angle. (Obviously, only a single angle in a triangle can be obtuse or it wouldn't be a triangle.) A triangle must be either obtuse, acute, or right. From the law of cosines, for a triangle with side lengths a, b, and c, cosC=(a^2+b^2-c^2)/(2ab), (1) with C the angle opposite side C The Obtuse Triangle has an obtuse angle (an obtuse angle has more than 90°). In the picture on the left, the shaded angle is the obtuse angle that distinguishes this triangle. Since the total degrees in any triangle is 180°, an obtuse triangle can only have one angle that measures more than 90° What is an obtuse triangle - YouTube. What is an obtuse triangle. Watch later. Share. Copy link. Info. Shopping. Tap to unmute. If playback doesn't begin shortly, try restarting your device This Video Answers the Question: Draw a large Obtuse Triangle on dot paper. Measure each angle. Find the sum of the measure of the angles

In the obtuse triangle $A B C, \angle B=23^{\circ},|A B|=20$ in., and $|B C|=30$ in.. The length of the height from the point $B$ is: Become a Great Entrepreneu Obtuse triangle's Profile. Top.gg Spice up your Discord experience with our diverse range of Discord bots

Acute Triangles. An acute triangle is a triangle whose angles are all acute (i.e. less than 90°).. In the acute triangle shown below, a, b and c are all acute angles. An equilateral triangle is always an acute triangle since all its angles are 60° which are acute angles. Obtuse Triangles. An obtuse triangle has one obtuse angle (i.e. greater than 90°) obtuse triangle - WordReference English dictionary, questions, discussion and forums. All Free The triangles above have one angle greater than 90°. Hence, they are called obtuse-angled triangles or simply obtuse triangles. In an obtuse triangle, the sum of the squares of the two sides is less than the square of the longest side. In ΔABC, the sides measure a,b,c such that c is the largest side, thus: a 2 + b 2 < c 2. Conversely, if in a. Parts of an Angle. The corner point of an angle is called the vertex. And the two straight sides are called arms. The angle is the amount of turn between each arm.. How to Label Angles. There are two main ways to label angles: 1. give the angle a name, usually a lower-case letter like a or b, or sometimes a Greek letter like α (alpha) or θ (theta). 2. or by the three letters on the shape.

### Obtuse Triangle - Definition, Formulas, Properties, Example

• Explore gazzaPax's photos on Flickr. gazzaPax has uploaded 811 photos to Flickr
• 파일:Obtuse Triangle With Altitude ZP2.svg. 위키백과, 우리 모두의 백과사전. SVG 파일의 PNG 형식의 미리보기 크기: 291 × 152 픽셀. 다른 해상도: 320 × 167 픽셀 | 640 × 334 픽셀 | 800 × 418 픽셀 | 1,024 × 535 픽셀 | 1,280 × 669 픽셀 | 2,560 × 1,337 픽셀. 이 자료는 위키미디어 공용 에.
• An obtuse triangle is a triangle in which one angle is an obtuse angle.Any triangle which is not obtuse is either a right triangle or an acute triangle.. Obtuse triangles all have one angle larger then 90. For example a triangle with angles 10,10 and 160, it would be a obtuse angle, since 160>90. The obtuse triangles can also be defined in different ways
• Can a obtuse triangle be regular? Special facts about obtuse triangle: An equilateral triangle can never be obtuse. Since an equilateral triangle has equal sides and angles, each angle measures 60°, which is acute. Therefore, an equilateral angle can never be obtuse-angled. A triangle cannot be right-angled and obtuse angled at the same time
• Illustration showing an obtuse triangle (one that has one obtuse angle). Keywords geometry , triangle , shape , angle , side , triangles , angles , polygon , obtuse , larger than 90 degree
• suppressing obtuse triangles in anisotropic meshes. Speciﬁcally, we introduce a hexagonal Minkowskimetric, which is sensitive to triangle orientation, to give a new formulation of the centroidal Voronoi tessellation (CVT) method. Furthermore, we prove several relevant properties of the CVT method with the newly introduced metric

### Obtuse Triangle Obtuse Triangle Definition Obtuse Angled Triangle Obtuse

Explanation: . If the largest angle of the obtuse isosceles triangle is , then this is the unique angle in between the two sides with an equal length of. We can imagine that the height of this isosceles triangle is simply the third side of a triangle formed by half of its base and the length of either equal side obtuse-triangle Follow. obtuse triangle obtuse-triangle Follow. 그냥 평범한 사람..인듯? 2 followers · 1 following · 1. obtuse.cf; Highlights. Pro Block or Report Block or report obtuse-triangle. Block user. Prevent this user from interacting with your repositories and sending you notifications Scalene Triangles. A scalene triangle has no sides of equal length. Its angles are also all different in size. Quick Recap On Types Of Triangles. We've looked at classifying types of triangles according to the size of its angles: right triangles, acute triangles and obtuse triangles; and also covered types of triangles according to the length of its sides: equilateral triangles, isosceles.

Obtuse may refer to: Obtuse angle, an angle of between 90 and 180 degrees. Obtuse triangle, a triangle with an internal angle of between 90 and 180 degrees. Obtuse leaf shape. Obtuse tepal shape. Obtuse barracuda, a ray-finned fish. Obtuse, a neighborhood in Brookfield, Connecticut. Topics referred to by the same term Define obtuse triangle. obtuse triangle synonyms, obtuse triangle pronunciation, obtuse triangle translation, English dictionary definition of obtuse triangle. n. a triangle with one obtuse angle The Obtuse Triangle. A copy of The Triple-Post Offense, which was published in 1962 by Fred Tex Winter, then the head basketball coach at Kansas State. Credit... Tony Cenicola/The New. Obtuse Triangle. Discover free flashcards, games, and test prep activities designed to help you learn about Obtuse Triangle and other concepts. They're customizable and designed to help you study and learn more effectively

### Acute and obtuse triangles - Wikipedi

9 10 4 - Obtuse scalene triangle, area=17.98. Computed angles, perimeter, medians, heights, centroid, inradius and other properties of this triangle A triangle that is not a right triangle is called an oblique triangle. In this chapter we learn how to solve oblique triangles using the laws of sines and cosines. But first we must be able to find the sine, cosine, and tangent ratios for obtuse angles

A right triangle has one angle that measures 90°. Let's try one more! Identify this triangle as acute, obtuse, or a right triangle. Perfect! This is an acute triangle because all of its angles measure less than 90°. Great job! ������ Now, you know how to identify acute, right and obtuse triangles ECT Python Program: Acute, Obtuse, and Right Triangles At a glance Core subject(s) Mathematics Subject area(s) Geometry Suggested age 12 to 16 years old Overview Use this program to help students precisely define the relationships between the angles for the differen.. Obtuse triangle. The term obtuse is also used in the context of triangles.Whenever a triangle is classified as obtuse, one of its interior angles has a measure between 90° and 180°. Triangle ABC above is classified as an obtuse triangle since angle A is between 90° and 180°.. It is not possible for a triangle to have more than one obtuse angle

An obtuse triangle may be an isosceles or scalene triangle. An equilateral triangle cannot be obtuse. The angle opposite to the obtuse angle is the longest side of the triangle. Similarly, a triangle cannot have a right angle and obtuse angle at the same time. If one of the angles of a triangle is obtuse, the other two angles of a triangle must. Synonyms for obtuse triangle in English including definitions, and related words A scalene triangle can be acute-angled or obtuse-angled or right-angled. With the knowledge of two angles, the remaining one angle can be calculated as we know that the sum of angles in a triangle is 180 degrees (as per the properties of triangle). Perimeter Of Scalene Triangle Why can't triangles all be the same? It'd be nice if isosceles, equilateral, acute, and obtuse triangles followed the same rules as right triangles, but unfortunately they do not. Don't let the goofy shape names confuse you, every type of triangle has a simple formula for finding area, base, and height 5 5 8 - Obtuse isosceles triangle, area=12. Computed angles, perimeter, medians, heights, centroid, inradius and other properties of this triangle

### Obtuse Triangle - Home MSU Librarie

An obtuse triangle (or obtuse-angled triangle) is a triangle with one obtuse angle (greater than 90°) and two acute angles. Acute and obtuse triangles are the two different types of oblique triangles — triangles that are not right triangles because they have no 90° angle Equilateral and obtuse triangle An acute triangle (or acute angled triangle) is a triangle with three acute angles (less than 90 Â °). An optusian triangle (or optus angled triangle) is a triangle with a dull angle (greater than 90 Â °) and two acute angles Obtuse Angle An angle greater than radians ( ) and less than radians ( ). SEE ALSO: Acute Angle , Full Angle , Obtuse Triangle , Reflex Angle , Right Angle , Straight Angl

### Obtuse Angled Triangle - Definition, Formula, Properties & Exampl

An obtuse triangle (or obtuse-angled triangle) is a triangle with one obtuse angle (greater than 90°) and two acute angles. Since a triangle's angles must sum to 180° in Euclidean geometry, no Euclidean triangle can have more than one obtuse angle Obtuse Triangle An acute triangle has all interior angles acute (less than 90°), a right triangle has one right angle (equal to 90°) and an obtuse triangle has one obtuse angle (greater than 90°). To classify the triangles according to their sides, we measure the length of each of its sides a) Right-angled b) Scalene c) Acute d) Isosceles e) Obtuse 5) An equilateral triangle... a) has 3 different lengths and 3 different angles. b) has 3 sides of equal length. c) has all 3 sides the same length and each inside angle is the same size. 6) A right-angled triangle... a) has one angle 90º. b) has 3 sides all different lengths An Obtuse angled triangle having ratio of its sides are 4 : 5 : 7 and if Inradius of the triangle is 2√6 cm. Find the smallest side of the triangle. Free Practice With Testbook Mock Tests Beginner to Pro with 450+ English SSC Qs An obtuse triangle (or obtuse-angled triangle) is a triangle with one obtuse angle (greater than 90°) and two acute angles. Since a triangle's angles must sum to 180° in Euclidean geometry, no Euclidean triangle can have more than one obtuse angle. 39 Related Question Answers Foun

### Types of Triangles: Acute and Obtuse - ThoughtC

The Obtuse Angled Triangles can be divided into two types based on the dimension of the sides. It is to be noted that all the sides of an Obtuse Angled Triangle can never be equal as one angle has to be greater than 90^0. Therefore, an Obtuse Angled Triangle can never be an Equilateral Triangle. The two types of Obtuse Angled Triangles are. Obtuse Scalene Triangle Translation to prove SSS Congruence. Describe the translation you performed on the original triangle. Use details and coordinates to explain how the figure was transformed, including the translation rule you applied to your triangle. What other properties exist in your triangle Types of Triangles by Length. In an equilateral triangle, all three sides are the same length. An equilateral triangle is always equiangular (see below). In an isosceles triangle, two sides are the same length. An isosceles triangle may be right, obtuse, or acute (see below). In a scalene triangle, none of the sides are the same length An obtuse triangle (or obtuse-angled triangle) is a triangle with one obtuse angle (greater than 90°) and two acute angles. Since a triangle's angles must sum to 180° in Euclidean geometry, no Euclidean triangle can have more than one obtuse angle. 31 Related Question Answers Foun

### OBTUSE Cambridge English Dictionary에서의 의�

• Correct answer: 20°. Explanation: Because line segments ZA and ZB are radii of the circle, they must have the same length. That makes triangle ABZ an isosceles triangle, with <ZAB and <ZBA having the same measure. Because the three angles of a triangle must sum to 180°, you can express this in the equation: 140 + 2x = 180 --> 2x = 40 --> x = 20
• Translation for: 'obtuse triangle' in English->Vietnamese dictionary. Search over 14 million words and phrases in more than 490 language pairs
• Drawing an obtuse triangle, and marking its height. I would like to have an obtuse triangle with vertices A, B, and C drawn. The lengths of the sides are to be labeled a, b, and c. If the angle at C is the obtuse angle, the height of the triangle is to be drawn as a dashed line segment from A, and the side BC is to be extended as a dashed line.
• Translation for: 'obtuse triangle' in English->Romanian dictionary. Search over 14 million words and phrases in more than 490 language pairs
• scalene triangle 의미, 정의, scalene triangle의 정의: 1. a triangle with three sides all of different lengths 2. a triangle with three sides all of. 자세히 알아보기
• Synonyms for obtuse triangle in Free Thesaurus. Antonyms for obtuse triangle. 1 synonym for obtuse triangle: obtuse-angled triangle. What are synonyms for obtuse triangle
• Obtuse Triangle . Triangle in which one of the interior angles is obtuse. Example. This triangle has 2 acute angles and one obtuse angle. Historical note. During the Middle Ages and the Renaissance, an obtuse triangle was called a.

### Obtuse Triangle: Definition, Types, Formula

1. obtuse triangle: 1 n a triangle that contains an obtuse interior angle Synonyms: obtuse-angled triangle Type of: triangle , trigon , trilateral a three-sided polygo
2. Definition and properties of obtuse triangles. Military Families. The official provider of online tutoring and homework help to the Department of Defense. Check Eligibility. Higher Education. Improve persistence and course completion with 24/7 student support online. How it Works. Public Libraries
3. Obtuse triangle with altitude drawn. Source. G.A. Wentworth Plane And Solid Geometry (Boston: Ginn & Company, 1899) 16
4. FOM 11 Ch 3/4 — Dav 9: Using Sin and cos Laws with Obtuse Triangles allJWS Right AN91esl eccauso novQQ Laws. An obtuse triangle is Q triangle with one angle grøo±ør *hon degrees. Mr. Obtuse Triangle is happy though that he can use th
5. Area of Obtuse Triangle. Discover Resources. Kranji-3-reportbug; Transformation of Curves - Translation in the direction of the y-axis; Equilateral Triangle

Acute, Obtuse, and Right Triangles. This is a free geometry lesson for 4th grade about acute, obtuse, and right triangles (classification according to angles). It contains varied exercises, including several where students explore these concepts -- and even the angle sum of a triangle -- by drawing 삼각봇을 제작합니다 We present a simple technique for improving the 2D meshing quality by eliminating obtuse triangles. Given a well-initialized 2D mesh that contains a small amount of obtuse triangles, we iteratively insert a few new points at calculated feasible regions in the neighborhood of obtuse triangles To find the area of a triangle without a right angle, you multiply one-half the base by the height. Obtuse triangles are included in this group. The base can be any side of the triangle. However, you do need to pick one side because you measure the height from that side. If the height is given, chose the side that the height divides

### What Is an Obtuse Triangle? - Definition & Area Formula - Video & Lesson Transcript

• Solving obtuse triangle given angles and 1 side. Ask Question Asked 4 years, 5 months ago. Active 4 years, 5 months ago. Viewed 957 times 0 $\begingroup$ This probably seems like a very basic question but it has been along time since I did any trigonometry... I am trying to calculate.
• Here, BE is the median of ∆ABC & E is the mid point of AC i.e. AE = EC. And, we can draw median from point C Here, CF is the median of ∆ABC & F is the mid point of AB. i.e. AF = FB. So, our median can be For obtuse angled triangle ∆ABC Medians are For right angled triangle ∆ABC Medians ar
• Properties of acute triangles. Whenever a triangle is classified as acute, all of its interior angles have a measure between 0 and 90 degrees. The side opposite the largest angle of a triangle is the longest side of the triangle. The greater the measure of an angle opposite a side, the longer the side

I have a program that determines whether or not a triangle is an obtuse triangle. The program instructs the user to input 3 side length values (s1,s2,s3). If the squared value of the smaller two side length values is less than the squared value of the largest side value then it is an obtuse triangle With respect to the symmetric measure on triangles, the probability that a random triangle is obtuse is. 3 2 − 3 ln ⁡ 2 π ≈ 0. 8 3 8 \frac {3} {2}-\frac {3\ln 2} {\pi}\approx0.838 2 3 − π 3 l n 2 ≈ 0. 8 3 8. Sylvester's Four Point Problem. convex. reflex/reentrant

Obtuse Triangle Calculator. An angle which is more than 90 degree and less than 180 is obtuse angle. a triangle with one angle as obtuse is called as the obtuse triangle. Find the area and perimeter of an obtuse triangle with height, base and sides of the triangle Phrases related to: obtuse triangle. Yee yee! We've found 3 phrases and idioms matching obtuse triangle. A relationship involving three persons (usually two women and one man or two men and one woman) among whom there are conflicting and competing attachments of a romantic or emotional nature. Used other than as an idiom: see black, triangle ### Obtuse Triangle - GeoGebr

triangle [tri´ang-g'l] a three-cornered object, figure, or area, such as a delineated area on the surface of the body; called also trigone. carotid triangle, inferior that between the median line of the neck in front, the sternocleidomastoid muscle, and the anterior belly of the omohyoid muscle. carotid triangle, superior carotid trigone. obtuse-triangle. New Scratcher Joined 11 months, 1 week ago Andorra. About me. I am never right :(What I'm working on. Being right. Featured Project. My OC! What I've been doing. Shared Projects (5) View all. Mah song {obtuse angles are never right} by obtuse-triangle; If I died by obtuse-triangle; TCS 1:the beginning. obtuse triangle的中文翻译，obtuse triangle是什么意思，怎么用汉语翻译obtuse triangle，obtuse triangle的中文意思，obtuse triangle的中文，obtuse triangle in Chinese，obtuse triangle的中文，obtuse triangle怎么读，发音，例句，用法和解释由查查在线词典提供，版权所有违者必究�

### Obtuse Triangle -- from Wolfram MathWorl

1. Obtuse Isosceles Triangle Definition. The term Obtuse Isosceles Triangle is made up of three words i.e., Obtuse, Isosceles and Triangle.In mathematics, the word Obtuse refers to the angles that are greater than 90^0 and the word Isosceles refers to the triangles in which any two sides are of equal length
2. 파일:Obtuse Triangle With Altitude ZP2.svg. SVG 파일의 PNG 형식의 미리보기 크기: 291 × 152 픽셀. 다른 해상도: 320 × 167 픽셀 | 640 × 334 픽셀 | 800 × 418 픽셀 | 1,024 × 535 픽셀 | 1,280 × 669 픽셀 | 2,560 × 1,337 픽셀. 이 자료는 위키미디어 공용 에 있습니다. 이 자료의 자세한.
3. The sum of the acute angles of an obtuse triangle is 70° and their difference is 10°Find the bigger acute angle A = the largest anglegivenand B and C are
4. Isosceles triangles have at least two congruent sides and two congruent angles. Right triangles contain an angle whose measure is 90 degrees. All the angles in an acute triangle are less than 90 degrees. Knowing the different types of triangles is important when solving proofs. equiangular equilateral isosceles right acute obtuse triangles

### Triangle Types and Classifications: Isosceles, Equilateral, Obtuse, Acute and Scalen

1. Printable step-by-step instructions for finding the altitude of an obtuse triangle with compass and straightedge or ruler. Math Open Reference. Home Contact About Subject Index. Constructing the altitude of an obtuse triangle. This is the step-by-step, printable version. If you PRINT this page, any ads will not be printed
2. Click here������to get an answer to your question ️ $$C$$ Can a triangle have two obtuse angles? Give reason for your answer 10. How many triangles can be drawn having its angles as $$45 ^ { \circ } , 64 ^ { \circ }$$ and $$72 ^ { \circ }$$ ? Give reason for your answe
3. I have to find out if a triangle is right, acute or obtuse angled from 3 given side lengths of the triangle. This is what I have until now: #include <stdio.h> #include <stdlib.h> #in..
4. How to say obtuse triangle in English? Pronunciation of obtuse triangle with 1 audio pronunciation, 4 synonyms, 2 meanings, 15 translations and more for obtuse triangle
5. An obtuse triangle is the triangle in which one of the side is the longest. It contains an obtuse angle and the longest side is the side that is opposite to the vertex of the obtuse angle. Let the three sides of the obtuse triangle be a, b and c respectively with c as the longest side. Let a = 9 inches and b = 14 inches
6. Construct a Triangle - Explanation and Examples. It is possible to construct equilateral triangles, isosceles triangles, scalene triangles, acute triangles, obtuse triangles, and right triangles using only a compass and straightedge. We have already discussed how to make an equilateral triangle, and we will use this skill to help us make some.

obtuse-angled triangle = noun a triangle that contains an obtuse interior angle • Syn: obtuse triangle • Hypernyms: triangle , trigon , trilatera An obtuse angle measures more than 90 degrees but less than 180 degrees. A triangle can have only one obtuse angle because if there were two obtuse angles, then the sum of two obtuse angles would always be greater than 180 ∘. Hence, a triangle can have only one obtuse angle Oo; obtuse triangle • a triangle with one obtuse angle. • an obtuse angle measures between 90º and 180º. EXAMPLES In JKL, LO=104 cm . What is the length of NO¯¯¯¯¯¯? Enter your answer in the box. cm An obtuse triangle J K L is drawn. N is the midpoint of side J K. Segment J N and segment N K are labeled with double tick mark. P is the midpoint of side K L. Segment K P and segment P L are labeled with single tick mark

Acute, right, & obtuse angles. CCSS.Math: 4.G.A.1. Transcript. Acute angles measure less than 90 degrees. Right angles measure 90 degrees. Obtuse angles measure more than 90 degrees. Learn about angles types and see examples of each. Created by Sal Khan Kontrollera 'obtuse triangle' översättningar till svenska. Titta igenom exempel på obtuse triangle översättning i meningar, lyssna på uttal och lära dig grammatik Name Date TRIANGLE CLASSIFICATION 1 ACUTE, OBTUSE OR RIGHT? For each triangle, shade in the acute angles yellow, the obtuse angles green and the right angles red. Write down whether it is an acute, obtuse or a right angle triangle

### What is an obtuse triangle - YouTub

1. Drawing an Obtuse Triangle - YouTub
2. In the obtuse triangle $A B C, \angle B=23^{\circ},A B=20$ in
3. Obtuse triangle Top

### Right Triangles, Acute Triangles, Obtuse Triangles (solutions, examples, videos

1. obtuse triangle - WordReference
2. Obtuse Angle - Definition, Degree, Examples Obtuse Angle
3. Angles - Acute, Obtuse, Straight and Righ
4. triangle scalene gazzaPax Flick
5. 파일:Obtuse Triangle With Altitude ZP2
6. Obtuse triangle - Art of Problem Solvin        