More Satan in the maths!

Well, geometries... Say you have a right triangle, with lines parallel to the "C" side (hypotenuse) cutting through the "A" and the "B" sides. if
vx = xw
doesn't
fg = gh ?
If they are equal, then why are my legs so long?
http://www.flickr.com/photos/uchuujin/485532192/
SATAN!
