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### Circle Definitions

```Date: 04/29/2002 at 14:02:52
From: Katie Troutman
Subject: Circles

Define a circle and its parts: diameter, radius, center,
circumference.
```

```
Date: 04/29/2002 at 14:17:40
From: Doctor Sarah
Subject: Re: Circles

Hi Katie - thanks for writing to Dr. Math.

The center of a circle is the same distance from all points on the
circle and is the intersection of any two different diameters.

From the Harcourt Multimedia Math Glossary:

A circle is a closed figure with all points on the figure the same
distance from the center point.

The diameter is a line segment that passes through the center of a
circle and has its endpoints on the circle.

The radius is a line segment with one endpoint at the center of a
circle and the other endpoint on the circle.

The circumference is the perimeter of a circle.

A chord is a line segment with endpoints on a circle.

- Doctor Sarah, The Math Forum
http://mathforum.org/dr.math/
```
Associated Topics:
Elementary Circles
Elementary Definitions
Middle School Conic Sections/Circles
Middle School Definitions

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