The Circle
The simplest conic section - the set of all points at a fixed distance from a center.
Equation of a Circle
A circle with centre $(h, k)$ and radius $r$ has the equation:
$$(x-h)^2 + (y-k)^2 = r^2$$Lesson 18 of 27
The simplest conic section - the set of all points at a fixed distance from a center.
A circle with centre $(h, k)$ and radius $r$ has the equation:
$$(x-h)^2 + (y-k)^2 = r^2$$