# 1st Class Mathematics Lines, Shapes and Solid Triangle

## Triangle

Category : 1st Class

### Triangle

A triangle has three sides and three angles. Let's see the following figures:

The above given figures have three sides and three angles. Therefore, they are triangles.

Which one of the following is a triangle?

(a)

(b)

(c)

(d)

How many lines are required to make a triangle?

(a) 4

(b) 7

(c) 3

(d) 5