Altitude, Orthocenter of a Triangle and Triangulation
Roland Coghetto (2016)
Formalized Mathematics
Similarity:
We introduce the altitudes of a triangle (the cevians perpendicular to the opposite sides). Using the generalized Ceva’s Theorem, we prove the existence and uniqueness of the orthocenter of a triangle [7]. Finally, we formalize in Mizar [1] some formulas [2] to calculate distance using triangulation.