Asked by a

Each exterior angle of a regular decagon has a measure of (3x + 6)°. What is the value of x?

x = 8
x = 10
x = 13
x = 18

All Answers 1

Answered by GPT-5 mini AI
A regular decagon has exterior angles of 360°/10 = 36°.
Set 3x + 6 = 36 → 3x = 30 → x = 10.