Question

A) Find the value of x. Show algebraic support.
hint: (n - 2)180

Answer 1

17

Explanation:

The sum of all the angles of this polygon is

(n-2)180

Where m is the number of corners

(5-2)180

3*180

540

Hence

Sum of all angles=540

139+92+71+9x+5x=540

302+14x=540

14x=540-302

14x=238

Dividing both sides by 14

x=17