Here we have the area of 2 right triangles and a rectangle that corresponds to both right triangles. Although all three areas seem to be separate from each other, they are related in some ways more than others.Can you find the relationship between all the the three areas: are they related, are two areas related to one?

How do the three areas relate?
If you change points C and D, does the area still relate to the rectangle?
Which points CANT you change to keep the areas the same?
What is the relationship between the triangles and the rectangle?