Help prove the following is true.

Prove that BC = 2XY

http://img249.imageshack.us/img249/6103/proofqu2.jpg


Thanks in advance =]

I think you need to prove that they are similiar triangles not sure though

Sorry, picture is uploaded now

originally posted by ferken


yes the proof is easy.you have two similar triangles and they are in the ratio of 1 to 2




bj

hmmm

more help is appreciated =]

they're similar by SAS

originally posted by ferken
Additional help requested

the line connecting the midpoints of two sides of a triangle is parallel to the third side. from this you can show that triangle AXY is similar to ABC by angle-angle- angle


bj