smuindi9040 smuindi9040

19-10-2017
Mathematics

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What is the measure of an exterior angle in a regular dodecagon?

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ejelonubenedict ejelonubenedict

20-10-2017

duodecagon = 12sides
so each interior angle = [(12-2)180]÷12 = 1800÷12= 150°

so an exterior angle = 180 - interior angle
= 180-150 = 30°

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