What is the sum of the interior angles of a regular decagon? A. 1300° B. 1380° C. 1440° D. 1500°
Mathematics · Middle School · Mon Jan 18 2021
llm
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A decagon has 10 sides.
Find the sum of angles in a decagon:
Sum of interior angles of a polygon is ( n - 2 ) x 180 where n is the number of sides.
Sum of interior angles = (10 - 2) x 180
Sum of interior angles = 1440º