# NCERT Class 8 Mathematics Solutions: Chapter 3 –Understanding Quadrilaterals Exercise 3.1 Part 6

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**Question: 7**

(a) Find

Image:

(b) Find

Image:

**Answer:**

(a)

Here, two angles length are given.

So, sum of interior angle of triangle

Now, sum of linear pair angles is.

(b) Using angle sum property of a quadrilateral.

Sum of interior angles of triangle

Now, sum of linear pair angles is.