fishamaphone on 01 June 2007
The problem is that we can't assume things from eyeballing them. Let's say the "right" angle in the left triangle is really 92 degrees, and the "right" angle in the right triangle is 88. You'd end up with the same line, shifted up and left, still bisecting the horizontal line, but the diagonal would be longer on the left side than the right. It can't be proven or disproven without more info.
