## Geometry and Trigonometry## Geometry Beginnings |

## What are the divisions found within the field of geometry? |

*Plane geometry*—This includes common features such as circles, lines, triangles, and polygons.

*Solid geometry*—This also includes such figures as circles and lines, as well as polyhedrons.

*Spherical geometry*—This includes shapes such as spherical triangles (see below) and polygons.

There are other types of geometry, too, including projective geometry and non-Euclidean geometry. Most of these are more complex forms of geometry that each have their own special reasons for use.