|Find the intersection of two circles
This online calculator finds the intersection points of two circles given the center point and radius of each circle. It also plots them on the graph.
|Equation of a circle passing through 3 given points
This online calculator finds a circle passing through three given points. It outputs the center and radius of a circle, circle equations and draws a circle on a graph. The method used to find a circle center and radius is described below the calculator.
|Cutting a circle
Two ways to cut a circle into equal parts : sector cuts and parallel cuts.
|General to Standard Form Circle Converter
The calculator takes the equation of a circle in general form, with variables for x, y, and constants a, b, c, d and e, and converts it to the standard form equation for a circle with variables h, k, and r. It then calculates the center of the circle (h, k) and its radius r. If the equation cannot be converted to standard form, the calculator reports an error message.