Radical axis

The radical axis is a concept in geometry, particularly in the study of circles. Given two circles in a plane, the radical axis is the locus of points that have the same power with respect to both circles. ### Key Points about the Radical Axis: 1. **Definition**: For two circles, the radical axis consists of all points P such that the power of the point P with respect to the first circle is equal to the power of the point P with respect to the second circle.