Question

solve this question 5​

Answer 1

Consider the fourth angle as x

In a quadrilateral we know that the sum of all the angles is 360

So we can write it as

x + 75 + 90 + 75 = 360

On further calculation we get

x = 360 - 75 - 90 - 75

By subtraction

x = 360 - 240

x = 120

Therefore, the measure of the fourth angle is 120.