삼각형
노트
위키데이터
- ID : Q19821
말뭉치
- Let's draw ourselves a triangle.[1]
- If that angle becomes 0, we end up with a degenerate triangle.[1]
- Then we keep making that angle smaller and smaller and smaller all the way until we get a degenerate triangle.[1]
- So if you want this to be a real triangle, at x equals 4 you've got these points as close as possible.[1]
- triangle(30, 75, 58, 20, 86, 75); Description A triangle is a plane created by connecting three points.[2]
- A triangle is composed of three line segments.[3]
- To name a triangle we often use its vertices (the name of the endpoints).[3]
- When a triangle has three congruent sides, we call the triangle an equilateral triangle.[3]
- When a triangle has two congruent sides it is called an isosceles triangle.[3]
- It is usual to name each vertex of a triangle with a single capital (upper-case) letter.[4]
- Alternatively, the side of a triangle can be thought of as a line segment joining two vertices.[4]
- In Geometry, a triangle is a three-sided polygon that consists of three edges and three vertices.[5]
- If ABC is a triangle, then it is denoted as ∆ABC, where A, B and C are the vertices of the triangle.[5]
- These angles are formed by two sides of the triangle, which meets at a common point, known as the vertex.[5]
- Let us say, ∠1, ∠2 and ∠3 are the interior angles of a triangle.[5]
- A vertex is a point where two or more curves, lines, or edges meet; in the case of a triangle, the three vertices are joined by three line segments called edges.[6]
- A triangle is usually referred to by its vertices.[6]
- Hence, a triangle with vertices a, b, and c is typically denoted as Δabc.[6]
- For example, a triangle in which all three sides have equal lengths is called an equilateral triangle while a triangle in which two sides have equal lengths is called isosceles.[6]
- At the time, Orlando was still dating Katy Perry, so the blogs were quick to call the whole thing a messy love triangle.[7]
- The dim-witted buffoon of commedia dell’arte, pining for his Columbine but outwitted by Harlequin, became the formula for the classic love triangle in opera and theater.[7]
- The famous love triangle between Prince Charles, Princess Diana, and Camilla Parker Bowles has been re-created for Season 4 of The Crown.[7]
- There was a close up of one of the band members who was playing the triangle.[7]
- In this article, we are going to learn about the simplest form of a polygon, a triangle .[8]
- As the name suggests, the triangle is a polygon that has three angles.[8]
- This is called the angle sum property of a triangle.[8]
- In a right-angled triangle, ∆ABC, BC = 26 units and AB = 10 units.[8]
- In Geometry, a triangle is the most important shape, defined as a closed two-dimensional diagram containing 3 sides, 3 angles and 3 vertices.[9]
- However, sometimes it's hard to find the height of the triangle.[10]
- There are a few methods of obtaining right triangle side lengths.[11]
- 461 (Volume LIII, Number 11), Quadrant Magazine Limited, page 104: One of the writers' most pleasing inventions was to treat the triangle love story as comedy.[12]
- A draughtsman's square in the form of a right-angled triangle.[12]
- How Does One Cut a Triangle?[13]
- Acute-angled triangle An acute triangle has all its internal angles as acute( i.e.. less than 90°).[14]
- Obtuse-angled triangle An obtuse triangle has one of its internal angles as obtuse ( i.e.. greater than 90°).[14]
- If all the three sides of a triangle are equal, it is called an equilateral triangle.[14]
- In the given triangle, all three sides are equal in length.[14]
- If two of its sides are equal, a triangle is called isosceles.[15]
- A triangle with all three equal sides is called equilateral.[15]
- As regard the angles, a triangle is equiangular if all three of its angles are equal.[15]
- Euclid showed that in an isosceles triangle the base angles are equal and, conversely, the sides opposite equal angles are equal.[15]
- A triangle with vertices A, B, and C is denoted △ A B C {\displaystyle \triangle ABC} .[16]
- In Euclidean geometry , any three points, when non- collinear , determine a unique triangle and simultaneously, a unique plane (i.e. a two-dimensional Euclidean space ).[16]
- In other words, there is only one plane that contains that triangle, and every triangle is contained in some plane.[16]
- An equilateral triangle is also a regular polygon with all angles measuring 60°.[16]
- An isosceles triangle can be drawn in many different ways.[17]
- A right-angled triangle has one 90° angle.[17]
- That 90° angle is shown as a small square where two sides of the triangle join.[17]
- It is possible for a triangle to be a right-angled triangle and an isosceles triangle at the same time.[17]
- Interestingly, the triangle is the only rigid polygon formed out of straight line segments, meaning that if the three lengths of the sides are given, the measurements correspond to a unique triangle.[18]
- Because of this, it is often possible, given some information about a triangle (e.g. some side lengths and some angles), to determine additional facts about the triangle.[18]
- The Triangle shape tool offers a handle on the shape and options on the context toolbar to enable the triangle to be modified.[19]
- A triangle is a 3-sided polygon sometimes (but not very commonly) called the trigon.[20]
- Every triangle has three sides and three angles, some of which may be the same.[20]
- The sides of a triangle are given special names in the case of a right triangle, with the side opposite the right angle being termed the hypotenuse and the other two sides being known as the legs.[20]
- The study of triangles is sometimes known as triangle geometry, and is a rich area of geometry filled with beautiful results and unexpected connections.[20]
소스
- ↑ 1.0 1.1 1.2 1.3 Triangle inequality theorem (video)
- ↑ triangle() \ Language (API) \ Processing 3+
- ↑ 3.0 3.1 3.2 3.3 Triangles (Pre-Algebra, Introducing geometry) – Mathplanet
- ↑ 4.0 4.1 Triangle definition and properties
- ↑ 5.0 5.1 5.2 5.3 Triangles in Geometry (Definition, Shape, Types, Properties & Examples)
- ↑ 6.0 6.1 6.2 6.3 Triangle Calculator
- ↑ 7.0 7.1 7.2 7.3 Definition of Triangle by Merriam-Webster
- ↑ 8.0 8.1 8.2 8.3 What is a triangle and its properties? Definition, types, formulas of triangles
- ↑ Types of Triangles – Explanation & Examples
- ↑ Triangle Area Calculator
- ↑ Right Triangle Calculator
- ↑ 12.0 12.1 Wiktionary
- ↑ How Does One Cut a Triangle?
- ↑ 14.0 14.1 14.2 14.3 Properties of Triangle
- ↑ 15.0 15.1 15.2 15.3 Triangle Classification
- ↑ 16.0 16.1 16.2 16.3 Wikipedia
- ↑ 17.0 17.1 17.2 17.3 What are the types of triangle?
- ↑ 18.0 18.1 Brilliant Math & Science Wiki
- ↑ Triangle
- ↑ 20.0 20.1 20.2 20.3 Triangle -- from Wolfram MathWorld