# NCERT Class 8 Mathematics Solutions: Chapter 3 –Understanding Quadrilaterals Exercise 3.2 Part 1

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**Question: 1 **Find in the following figures:

(a)

Image

(b)

Image

**Answer:**

**(a)**

Let’s take two interior angle m and n.

Image:

**Here, **

Exterior angle = Sum of opposite interior angles

**(b)**

Let’s take interior angle m, n and y.

Image:

Two interior angles are right angles = 90°

Here,

Thus, sum of the angles of pentagon