CMO2007P4.txt

A = pt
B = pt
C = pt
O = otri A B C
I = itri A B C
ab = line A B
bc = line B C
ca = line C A
D = foot I bc
E = foot I ca
F = foot I ab
fd = line F D
P = pt fd ca
de = line D E
Q = pt de ab
M = mdpt P E
N = mdpt Q F