1. Basic elements of triangle

2. Introduction A triangle is a closed figure with three sides.
A triangle is a special kind of shape.

3. Vertex of triangle A C B
A point where two line segments meet is called vertex.
A triangle has 3 vertex.
In the above figure A
, B
and C
are the vertex of triangle

4. Angles of triangle A B C
An angle is formed at place where two line segments meet
A triangle has 3 angles.
In the above figure are the
are angles of triangle
∠ABC
, ∠BCA
and ∠CAB

5. Sides of triangle A B C
The lines which forms the triangle are called sides of triangle
A triangle has 3 sides
In the above figure AB
, BC
, CA
are sides of triangle

6. Try these From the above figure Name all the vertex of triangleP Q R
From the above figure
Name all the vertex of triangle
Name all the sides of triangle
Name all the angles of triangle