Perpendiculars from the Midpoints of the Orthic Triangle
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Let ABC be a triangle. The triangle formed by the endpoints of the altitudes is called the orthic triangle of ABC.[more]
Perpendicular lines from the midpoints of the sides of the orthic triangle of ABC to the opposite sides of ABC are concurrent.[less]
Contributed by: Jay Warendorff (March 2011)
Open content licensed under CC BY-NC-SA
"Perpendiculars from the Midpoints of the Orthic Triangle"
Wolfram Demonstrations Project
Published: March 7 2011