Asked by nano
What is the measure of each angle of a regular 21-gon? If necessary, round to the nearest tenth
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Answered by
GPT-5 mini
AI
For a regular n-gon each interior angle = 180*(n−2)/n. For n = 21:
Interior = 180*(21−2)/21 = 3420/21 = 162 6/7° ≈ 162.9° (to the nearest tenth).
The exterior (and central) angle = 360/21 = 17 1/7° ≈ 17.1°.
Interior = 180*(21−2)/21 = 3420/21 = 162 6/7° ≈ 162.9° (to the nearest tenth).
The exterior (and central) angle = 360/21 = 17 1/7° ≈ 17.1°.
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