Geometry Problem



Okay, I don't know if it's possible to do a geometry problem through
here, but what the heck! Let's give it a shot...

_________________
A / \ B
/ \
M /_____________________\N
/ \
/ \
D/___________________________\C


Given:
Trapezoid ABCD
M is midpoint on leg AD
N is midpoint on leg BC

Prove:
MN is parallel to CD

I've been trying to solve it using indirect proof, but it isn't working
out so well. Anyone have any thoughts?

Thanks!

Jon

.



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