Solid Geometry

Solid Geometry is the geometry of three-dimensional space,
the kind of space we live in.

Three Dimensions

It is called three-dimensional, or 3D, because there are three dimensions: width, depth and height.

Simple Shapes

Let us start with some of the simplest shapes:

Common 3D Shapes

Properties

Solids have properties (special things about them), such as:

• volume (think of how much water it could hold)
• surface area (think of the area you would have to paint)
• how many vertices (corner points), faces and edges they have