Question

If m∠a = (4z + 68), find the value of z. answer choices - z=112 z = 28 z=18 z=8

Please help running out of time ​

Answer 1

z = 18.

Explanation:

This regular polygon has 9 sides

so each angle = 180 - (360/9) = 140 degrees.

m < a = 140 = 4z + 68

4z = 140 - 68

4z = 72

z = 18.