Question

Please solve QN. 9and 10 and note :) solve in one variable

Answer 1

Hello,

Please refer the above photograph for the used process.

The topics used are:

Angle sum of a triangle is 180 and angle sum of a quadrilateral is 360.

Also ,
Take a quadrilateral with angles as a, b, c and d
Then, by angle sum property of quadrilateral we know that a+b+c+d = 360
So, we can write a+b+c+d in place of 360

This concept is used in question number 9 and 10.

Hope this will be helping you ✌️