Which feature must a concave polygon have at one of its corners?
ALess than 90°
BExactly 90°
CGreater than 180°
DEqual to 180°
Answer & Solution
Correct answer: C. Greater than 180°
1. Concave polygons have a corner that points inward.
2. That interior angle is greater than 180°.
3. In convex polygons all angles are less than 180°.
_Source: Wikipedia, Polygon, Convexity and intersection_
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