Question

can a regular polygon be concave? explain. choose the correct answer below. a. no, a concave polygon cannot be a regular polygon because all the angles are the same. b. no, a concave polygon has at least one angle greater than 180° and some angles less than 180°. therefore, the figure cannot have all the same angles and cannot be a regular polygon. c. yes, a concave polygon is always a regular polygon. d. yes, some regular polygons are concave. however, most regular polygons are convex.

Explanation:

A regular polygon has all sides equal and all angles equal. A concave polygon has at least one interior - angle greater than 180°. In a concave polygon, the angles are not all equal. So a regular polygon cannot be concave.

Answer:

B. No, a concave polygon has at least one angle greater than 180° and some angles less than 180°. Therefore, the figure cannot have all the same angles and cannot be a regular polygon.