Asked by lois

Each exterior angle of a regular decagon has a measure of (3x + 6)°. What is the value of x
Answered by Ashlie
X is 46
Answered by Steve
the exterior angles of a decagon are all 360/10 = 36°

So,
3x+6 = 36
x = 10

For the <u>interior</u> angles (each 144°),
3x+6 = 144
x = 46
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