Definition:Isogonal Conjugate

Definition

$X$ is a point in the plane of the triangle $ABC$.

Then the reflection of the lines $AX$, $BX$, and $CX$ about the angle bisectors at $A$, $B$, and $C$ concur at the isogonal conjugate of $X$.

Sources

• Weisstein, Eric W. "Isogonal Conjugate." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/IsogonalConjugate.html