# The radical axis of two circles: radical_axis

### 13.11.8 The radical axis of two circles: radical_axis

The radical axis of two circles is the set of points which have the same power with respect to each circle.

The radical_axis command finds the radical axis of two circles.

- radical_axis takes two arguments:
  C1,C2, two circles.
- radical_axis(C1,C2) returns and draws the radical axis of C1 and C2.

#### Example.

Input:

radical_axis(circle(0,1+i),circle(1,1+i))

Output: