Question

what is the measure of one exterior angle of a regular decagon

Answer 1

regular decagon has 10 sides so n = 10
interior angle = (n-2) × 180° / n
interior  angle = (10-2) x 180 / 10
interior angle =  = 8 x 180 / 10
interior angle =  = 144

exterior angle = 180 - 144 = 36

answer
36