A regular polygon has an interior angle of . How many sides does it have?
Answer and explanation
Correct answer: B. 9
- Step 1: The exterior angle is .
- Step 2: Number of sides .
Answer
9.
Why not the others: 8: This is the regular octagon, which has interior angle . 10: This is the regular decagon, which has interior angle . 12: This is the regular dodecagon, which has interior angle .
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