# Does this triangle have a name?

For any triangle $$A$$ (black below), form an enclosing triangle $$B$$ with sides perpendicular to $$A$$'s angle bisectors (red). Does this triangle $$B$$ (blue) have a name?

A nod to vonbrand's question: This came up in exploring geodesics on a tetrahedron. It would take me far afield to explain more fully.

• Just curious: Where does this come up? Jul 23 at 15:56

## 1 Answer

We could possibly call it the Anticevian triangle with respect to the incenter,

Edit: Using the above and google it seems it is called the Excentral triangle.