## Geometry and Trigonometry## Geometry Beginnings |

## What is Euclidean geometry? |

Euclidean geometry is named after Euclid, the famous Greek mathematician. It is geometry mostly based on Euclid’s fifth postulate—the parallel postulate—and is sometimes called parabolic geometry. Plane geometry is described as two-dimensional Euclidean geometry, while three-dimensional Euclidean geometry is known as solid geometry.