Question

1. which phrase best describes this polygon? convex dodecagon concave dodecagon concave hexagon convex hexagon

Explanation:

Step1: Recall polygon definitions

A dodecagon has 12 sides. A hexagon has 6 sides. The given star - shaped polygon has 12 sides.

Step2: Recall convex and concave definitions

A convex polygon has all interior angles less than 180° and all diagonals are inside the polygon. A concave polygon has at least one interior angle greater than 180°. The given dodecagon has some interior angles greater than 180°, so it is concave.

Answer:

concave dodecagon