Question

classify the polygon by the number of sides. tell whether it is convex or concave. the polygon is a pentagon and it is concave.

Explanation:

Step1: Count the sides

The polygon has 5 sides. A 5 - sided polygon is called a pentagon.

Step2: Check convexity

If any interior angle of a polygon is greater than 180°, it is concave. In this pentagon, there is an indentation which means an interior angle is greater than 180°, so it is concave.

Answer:

The polygon is a pentagon and it is concave.