Question

Find the measure of the exterior angle.

Answer 1

Answer: 30 degrees
Explanation: The sum of the angler opposite to the exterior angle is the measure of the exterior angle.
x + 90 = 4x
90 = 3x
x = 90/3
x = 30

Answer 2

X = 54°

4x = 216°

Step-by-step explanation:

sum of all exterior angle = 360°

90° + x°+ 4x° = 360°

x° + 4x° = 360° - 90°

x° + 4x° = 270°

5x° = 270°

X = 270° ÷ 5

X = 54°

4x = 54° × 4 = 216°