Category:Euler Triangle Formula

This category contains pages concerning Euler Triangle Formula:

Let $d$ be the distance between the incenter and the circumcenter of a triangle.

Then:

$d^2 = R \paren {R - 2 \rho}$

where:

$R$ is the circumradius

$\rho$ is the inradius.

Source of Name

This entry was named for Leonhard Paul Euler.