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Question

The ratio between an exterior angle and the interior angle of a regular polygon is 1: 5. Find
the measure of each interior angle

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Solution

From the question it is given that, The ratio between an exterior angle and the interior angle of a regular polygon is 1: 5
Let us assume exterior angle be y And interior angle be 5y
We know that, sum of interior and exterior angle is equal to 180,
y+5y=1806y=180y=180/6y=30
the measure of each interior angle =5y=5×30=150

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