Last question i need help with:
THE PAINED PANE:
A triangular piece of glass (labeled XYC) is cut from a rectangular pane (labled ABCD)
What fraction of the area of ABCD is XYC?
What I know:
Points X and Y are the midpoints of the two sides of the rectangular pane.
The diagram/picture: http://www.imagemule.com/uploads/07E8gE.jpg