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, …

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...

Let us read more about the triangle shape, the definition of a triangle, the parts of a triangle, the kinds of triangles and the properties of triangles on this page.

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.

A triangle is a three-sided polygon that has 3 angles, and 3 vertices. Learn the definition of triangles, their types, parts, properties using a variety of examples.

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 …

Types of Triangles Isosceles, Equilateral, Scalene, Obtuse... Triangles can be classified by various properties relating to their angles and sides. The most common classifications are described on this …

This page explains the characteristics of triangles, which have three sides and angles summing to 180 degrees. They can be classified by side lengths into isosceles, equilateral, and scalene, and by …

Triangles are polygons (shapes) with three sides and three angles, which can be formed by connecting any three points in a plane. They are one of the first shapes studied in geometry.

Jul 23, 2025 · Triangles are fundamental in Euclidean geometry, and their properties are essential for various real-world applications. The triangle shape is one of the most common shapes that we …