Center - Math Open Reference

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A center is a point that is the same distance from all the extremities of a figure.

1. Center of a circle

The center of a circle is the point which is equidistant from all points on the circle. In the figure below, C is the center. The center point is often used to label the whole circle. The figure below would be called "the circle C".

For more on this see Circle definition.

2. Center of a regular polygon

The center of a regular polygon is the point that is same distance from all its vertices.

For more on this see Center of a regular polygon.

2. Centers of triangles

Triangles have various different centers depending on how they are derived. Below, for example, is the incenter - the point where the three angle bisectors meet. For an overview of four common triangle centers see Overview of triangle centers. (C) 2011 Copyright Math Open Reference. All rights reserved

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