Question

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

Explanation:

Step1: Count the sides

The polygon has 4 sides. A 4 - sided polygon is called a quadrilateral.

Step2: Check convex - concave

If any interior angle of a polygon is greater than 180°, it is concave. In this polygon, there is an interior angle greater than 180°. So it is concave.

Answer:

The polygon is a quadrilateral and it is concave.