# Isogonal Conjugates and the Incenter

- Author:
- Steve Phelps

- Topic:
- Geometry

Points P and P' are Isogonal Conjugates when the cevians from the same vertex for P and P'
make equal angles with the angle bisector of that vertex.
The incenter is its own conjugate.
If F is the conjugate transformation, F(P) = P' and F(P') = P and F(I) = I. The incenter is a fixed point of the transformation.

## New Resources

## Discover Resources

## Discover Topics

Download our apps here: