The shape of a structure affects how strong it is. Rectangles, arches, and triangles are the most common shapes used to build big structures. What happens when you push the side of a rectangle?

The polygon object can be any shape that has at least three sides and allows for a wide variety of common shapes to be stored in vector form. The example above is a pentagon but a polygon could be ...

What do you notice about the number of sides and the number of vertices each shape has? They are the same. Here is a table to help you remember how to identify some common 2D shapes by their ...

The shape of a structure affects how strong it is. Rectangles, arches, and triangles are the most common shapes used to build big structures. What happens when you push the side of a rectangle?