Question

determine whether or not the figure is a polygon. if it is a polygon, decide if it is concave or convex. concave polygon convex polygon not a polygon

Explanation:

Step1: Recall polygon definition

A polygon is a closed - figure made of straight line segments. The given figure is a closed - figure with straight sides, so it is a polygon.

Step2: Recall concave and convex polygon definitions

A convex polygon has all interior angles less than \(180^{\circ}\), and a concave polygon has at least one interior angle greater than \(180^{\circ}\). Visually, if we can draw a line segment between two vertices of the polygon that lies outside the polygon, it is concave. For the given polygon, we can find such line segments.

Answer:

Concave polygon