### Center

This mode constructs the center of a conic. In particular, you can use this mode to construct the center of a circle. For general conics the center is the intersection of its axes of symmetry. The center of a conic is sometimes useful for constructing a point on a movable conic.

Center of an ellipse | Center of a hyperbola
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#### Synopsis

Select a conic and construct its center.

#### Caution

This mode is not properly supported in non-Euclidean geometries. It always constructs the Euclidean center.

Page last modified on Thursday 28 of July, 2011 [09:09:37 UTC].
The original document is available at http://doc.cinderella.de/tiki-index.php?page=Center