# Definition:Geometry

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## Definition

**Geometry** is a branch of mathematics which studies such matters as form, position, dimension and various other properties of ordinary space.

It has been suggested that **geometry** can be divided into $3$ main branches:

**Metrical geometry**, that is to say, what is understood as**geometry**proper**Projective geometry****Analytic geometry**

## Also see

- Results about
**geometry**can be found**here**.

## Historical Note

The Greek historian Herodotus visited Egypt in about $450$ BCE and reported that the annual flooding of the Nile would wipe out all the boundaries between fields.

It is suggested that the discipline of **geometry** may have arisen there, from the need for the rulers to re-establish those boundaries subsequently.

## Linguistic Note

The word **geometry** derives from the Greek words meaning **Earth** and **measure**, suggesting that the discipline arose from the need to measure land.

## Sources

- 1952: T. Ewan Faulkner:
*Projective Geometry*(2nd ed.) ... (previous) ... (next): Chapter $1$: Introduction: The Propositions of Incidence: $1.1$: Historical Note - 1965: A.M. Arthurs:
*Probability Theory*... (previous) ... (next): Chapter $2$: Probability and Discrete Sample Spaces: $2.1$ Introduction - 1998: David Nelson:
*The Penguin Dictionary of Mathematics*(2nd ed.) ... (previous) ... (next):**geometry** - 2008: David Nelson:
*The Penguin Dictionary of Mathematics*(4th ed.) ... (previous) ... (next):**geometry** - 2014: Christopher Clapham and James Nicholson:
*The Concise Oxford Dictionary of Mathematics*(5th ed.) ... (previous) ... (next):**geometry**