1.

Find the measure of each interrior angle of regular decagon

Answer»

The sum of the measures of the interior ANGLES of a decagon (10 sided polygon) is 1,440. We found this by USING the formula (n-2)(180). Thus, to find the measure of each interior angle we simply divide the sum by the number of TOTAL sides in the polygon. 1,440/10 = 144.



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