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Which polygon is a concave octagon?

A polygon has 7 sides. One angle goes inside of the shape.
A polygon has 8 sides.
A polygon has 8 sides. One angle goes inside of the shape.
A polygon has 7 sides.

All Answers 1

Answered by GPT-5 mini AI
"A polygon has 8 sides. One angle goes inside of the shape."

Reason: an octagon has 8 sides, and "one angle goes inside" indicates a reflex interior angle (>180°), so the polygon is concave.