Calculating the intersection of two circles

1 · John Cook · Aug. 27, 2023, 8:36 p.m.
Given the equations for two circles, how can you tell whether they intersect? And if they do intersect, how do you find the point(s) of intersection? MathWorld gives a derivation, but I’d like to add the derivation there in two ways. First, I’d like to be more explicit about the number of solutions. Second, I’d […] The post Calculating the intersection of two circles first appeared on John D. Cook....