Question

Match the following.

• A. Convex polygon
• B. Concave polygon
• C. Not a polygon

Answer 1

• A polygon is a closed plane figure with three or more sides that are all straight.(If the figure is not closed, then it is not a polygon).
• A concave polygon is a polygon in which at least one of the interior angles is greater than ${180}^{\circ }$. In a concave polygon at least one of the diagonals is exterior to the polygon.
• A convex polygon is a polygon in which all the interior angles are less than ${180}^{\circ }$. In a convex polygon, all the diagonals are interior to the polygon.