Given three circles, each intersecting the other two in two points, the line segments connecting their points of intersection satisfy
(Honsberger 1995).
Given three circles, each intersecting the other two in two points, the line segments connecting their points of intersection satisfy
(Honsberger 1995).
Weisstein, Eric W. "Haruki's Theorem." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/HarukisTheorem.html