Seg AD ⊥ side BC, seg BE ⊥ side AC, seg CF ⊥ side AB. Point O is the orthocenter. Prove that, point O is the incentre of the ΔDEF.

Question

Seg AD ⊥ side BC, seg BE ⊥ side AC, seg CF ⊥ side AB
Point O is the orthocenter Prove that, point O is the incentre of
the ΔDEF

Samrat Dutta Roy · Accepted Answer