3 years ago

What is the measure of an exterior angle of a regular 7-sided polygon? The answer must be a decimal.

1 answer:

8 0

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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