When looking at a house, garage, store building or factory, or any of the other thousands of structures we live, work, and play in, look for the simple shapes. Look at the front of a house, and you ...

Before reading this guide, it may be helpful to read the guides from Module 1 on the properties of angles and the properties of 2D shapes. The sum of the angles inside any polygon can be found by ...

To build our skull, we begin with just a few simple shapes, forming the area where the eyes would sit. We can then continue ...

When most people think of shapes, they imagine a triangle, a rectangle, or maybe even a fancier-sounding rhombus or trapezoid. But to mathematicians, shapes encompass a vast universe of surprising ...