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3 February, 17:56

The sum of 4 interior angles of a pentagon is 402° find the measure of the fifth interior angle

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  1. 3 February, 18:56
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    Since the sum of all the interior angles in a pentagon is equal to 540 degrees, the measure of the fifth interior angle is 138 degrees.

    Calculations:

    540 - 402 = 138
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