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23 June, 19:29

What is the sum of the interior angles of a 15 sided polygon?

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  1. 23 June, 19:35
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    156

    Step-by-step explanation:

    Each triangle has an angle sum of 180 degrees, so the sum of the interior angles of the 15-gon must be (n-2) 13 * 180 = 2340 degrees. Since the 15-gon is regular, this total is shared equally among the 15 interior angles. Each interior angle must have a measure of 2340 : 15 = 156 degrees.
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