9. a) Calculate the areas of the three squares.
b) Is this triangle a right triangle? Explain.
No, because when you add 400+1600 the answer is 2000 its sopose to be 2500 to make the right triangle. 20 squared + 40 squared = 50 squared this is called phytagoream. If you add 400+1600 and the answer is 2500 you make a right triangle.