The document contains two triangles with side lengths provided and instructions to draw squares on each side and calculate their areas. For the first triangle with sides 9 cm, 12 cm and 15 cm, the areas of the three squares are 81 cm^2, 144 cm^2 and 225 cm^2. For the second triangle with sides 12 cm, 16 cm and 20 cm, the areas of the squares are 144 cm^2, 256 cm^2 and 400 cm^2. The second triangle is not a right triangle because none of the side lengths satisfy the Pythagorean theorem.

1. December 14, 2009

2. December 14, 2009
The sides of a triangle are 9 cm, 12 cm and 15 cm.
a) Sketch a picture of the triangle. Draw a square on each side of
the triangle.
b) What is the area of each square?
c) Write an addition statement using the areas of the three
squares.

3. December 14, 2009
A triangle has side lengths of 12 cm, 16 cm and 20 cm.
a) What are the areas of the three squares that can be drawn on the
sides of the triangle?
b) Is the triangle a right triangle? Explain.