360/10 = 36 degrees
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Providing that it's a regular decagon then each exterior angle will measure 36 degrees
For any polygon, regular or otherwise, the sum of exterior angles is always 3600.
Each exterior angle measures 36 degrees and the 10 exterior angles add up to 360 degrees.
216.
A ten-sided polygon. The sum of the angles of a decagon is 1440°. so 1440°÷10=144° ---------------------------------------------------------------------------- The easiest way to calculate this is to calculate the exterior angle and use the fact that the exterior and interior angles are supplementary. Sum exterior angles = 360° → Each exterior angle of a regular decagon is 360° ÷ 10 → Each interior angle of a regular decagon = 180° - 360° ÷ 10 = 144°