satisfying 
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be a sequence defined by 
.
if 
.
Y by RedFireTruck
Suppose that the midpoints 
and 
, of the three altitudes of a triangle fall on a line. Show that one of the angles of the triangle must be a right-angle.
and 
, of the three altitudes of a triangle fall on a line. Show that one of the angles of the triangle must be a right-angle.This post has been edited 2 times. Last edited by parmenides51, Jan 27, 2021, 10:05 PM
