# Triangle

## Definition

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

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.

### Parts

Learn concept of angle with its representation to use them in triangle.

Learn concept of angle with its representation to use them in triangle.

Learn concept of angle with its representation to use them in triangle.

Latest Math Topics
Latest Math Problems
Email subscription
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
Mobile App for Android users
###### 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