Assignment 8

by

Shridevi kotta

This
write up explores and proves some facts about acute triangle. Given triangle ABC. Construct the Orthocenter H. Let points
D, E, and F be the feet of the perpendiculars from A, B, and C respectfully.

If you are interested in accessing the GSP file
to explore for the obtuse case, click here to
down load the file.

If you download the GSP file and animate, you
will see that as the point A crosses the dotted lines, which mark the crossover
from acute to obtuse, the condition stops to be true.