Circle: Difference between revisions
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*[[Pi]] | *[[Pi]] | ||
*[[Power of a point]] | *[[Power of a point]] | ||
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*[[Inversion]] | *[[Inversion]] | ||
*[[Homothecy]] | *[[Homothecy]] | ||
Revision as of 18:19, 19 June 2006
Definition
- The locus of points distance
(radius) from center 
- A cross section of a cone or cylinder parallel to the base. For more on this, see Dandelin Spheres, a commonly used method of deriving all Conic sections.
for a circle centered at 
with radius 
(radius) from center 
for a circle centered at 
with radius 
Formulas
- Area
- circumference
Other Properties
- The perpendicular bisector of any chord in the circle is a diameter
- awaiting diagrams to add stuff on inscribed angles + tangents.
