
Triangle - Wikipedia
Triangles are classified into different types based on their angles and the lengths of their sides. Relations between angles and side lengths are a major focus of trigonometry. In particular, the sine, …
Triangles - Equilateral, Isosceles and Scalene
A triangle has three sides and three angles. The three angles always add to 180°. There are three special names given to triangles that tell how...
Triangle: Definition, Parts, Properties, Types, Formulas
May 13, 2024 · Triangles are classified into two groups: based on sides, 1) scalene, 2) isosceles, and 3) equilateral triangles; based on angles, 1) acute angle, 2) obtuse angle, and 3) right or right-angled …
Types of Triangles - Definitions, Properties, Examples
There are different types of triangles in math based on their sides and angles. Learn about different types of triangles, and their classification based on the side lengths and angles, with concepts, …
Triangle Calculator
Triangles classified based on their internal angles fall into two categories: right or oblique. A right triangle is a triangle in which one of the angles is 90°, and is denoted by two line segments forming a square …
Triangles: Types, Properties, and Formulas
Learn about the different types of triangles in geometry, their properties, and important formulas including the Pythagorean Theorem, Sine Law, Cosine Law, and area formulas.
Triangle | Definition & Facts | Britannica
Dec 5, 2025 · triangle, in geometry, a three-sided polygon. Triangles are formed by three line segments, sometimes called edges, whose end points intersect at points known as the vertices. The seemingly …