Introduction of Triangle
Introduction of Triangle: Overview
This topic covers concepts such as Triangles, Sides of Triangles, Vertices of Triangles, Interior of Triangles, Exterior of Triangles, Boundary of Triangles and Identifying Angles in Triangles.
Important Questions on Introduction of Triangle
What is the minimum number of acute angles in a triangle?

Maximum how many acute angles can there be in a triangle?

Maximum how many obtuse angles can there be in a triangle?

Maximum how many right angles can there be in a triangle?

How many angles are there in a triangle?

Look at the triangle shown below and identify their vertices, sides and angles and fill the given table.
Triangle No. | Name of triangle | Vertices | Sides | Angles |

A triangle has four vertices.

Write the name of the figure given below.

Write the name of the figure given below.

A right-angled triangle has _____ right angle. (write the answer in words)

An obtuse-angled triangle has _____ obtuse angle. (write the answer in words)

Triangles can be classified according to their _____ or sides.

A triangle is a polygon made up of _____ line segments. (write the answer in words)

A triangle has _____ vertices.


This kite is made of many triangles.You can see one inside the other. How many triangles can you count?

Choose the incorrect option:
A) A triangle has three sides.
B) A triangle has three interior angles.
C) A triangle has only one diagonal.
D) A triangle is a polygon.

Find the number of triangles in the above figure.

Where do points P and S lie with respect to the triangle ABC?

Susan’s teacher asked her to draw a triangle.
To draw a triangle she needs
