Math Doubts

Triangles

A closed plane geometric figure, which formed by the three line segments is called triangle.

a triangle

Introduction

The word, triangle is formed by a prefix “tri” and a word “angle“. The meaning of tri is three. According to these two meanings, triangle is three angles.

Geometrically, three line segments can only form three angles when their endpoints are connected each other as a closed geometric figure. Hence, the closed plane figure, formed by the three line segments which can only form three angles is known as triangle geometrically.

Basics

For studying the triangles, we have to learn the following three fundamental concepts.

Vertices

A point where two line segments get intersected in a triangle is called a vertex of a triangle.

Read more

Sides

A straight line segment that joins any two vertices of a triangle is called a side of a triangle.

Read more

Angles

An angle between two sides of a triangle at their respective vertex is called an angle of a triangle.

Read more

Construction

Learn how to construct a triangle in geometry

Classification

List of different types of triangles with their geometrical construction and examples.

Properties

List of properties of triangles with understandable proofs.

Email subscription
Math Doubts
Math Doubts is a best place to learn mathematics and from basics to advanced scientific level for students, teachers and researchers. Know more
Follow us on Social Media
Math Problems

Learn how to solve easy to difficult mathematics problems of all topics in various methods with step by step process and also maths questions for practising.

Learn more