Do a Polygon Have Curved Sides?

Polygons cannot contain any curved sides, or holes. For example, a square is a polygon but a circle is not. is a closed, flat shape that has only straight sides. Polygons can have any number of sides and angles, but the sides cannot be curved.

What is a polygon with curved sides?

The Reuleaux triangle is the first of a sequence of Reuleaux polygons whose boundaries are curves of constant width formed from regular polygons with an odd number of sides. Some of these curves have been used as the shapes of coins.

Do polygons have to have straight sides?

A polygon is a flat, two-dimensional (2D) shape with straight sides that is fully closed (all the sides are joined up). The sides must be straight. Polygons may have any number of sides. A shape with curved sides is not a polygon.