Circle
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
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.