Is the following figure a polygon?
First, let’s define polygon. A polygon is a plane shape with straight sides. Don’t forget that a plane is a flat surface with no thickness. That tells us that polygons cannot have depth. They cannot be three dimensions.
Back to the question at hand, is this figure a polygon? Well, it’s made up of straight sides. And it is a plane shape. It’s flat and doesn’t have depth. By looking at the definition of a polygon, we can say that yes, this figure is a polygon.