Head First 2D Geometry

squared sides add up every time

130 Chapter 3

The square of the longest side is equal to the

squares of the other two sides added together

This has to be one of the most amazing patterns you’ll discover

in geometry. Whenever you have a right triangle, if you draw a

square on the longest side, its area is exactly equal to the squares

you could draw on the other two sides.

This works for EVERY

right triangle you could

draw.

36 + 64 = 100

Area = 100

Area = 36

Area = 64

10

8

6

10 x 10

6 x 6

8 x 8

9 + 16 = 25

5

4

3

5 x 5

3 x 3

4 x 4

Area = 25

Area = 9

Area = 16

Your answer

might be in

words or letters.