FineIMadeAnAccount FineIMadeAnAccount
  • 18-10-2017
  • Mathematics
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What is the measure of an exterior angle of a regular 7-sided polygon? The answer must be a decimal.

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ejelonubenedict
ejelonubenedict ejelonubenedict
  • 20-10-2017
1 interior angle = [(n-2)180]÷n
= [(7-2)×180]÷7
= 900÷7 = 128.57 °
an exterior angle = 180 - interior
= 180-128.57
= 51.43°
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