1. a b c http://www.vegaspbs.org/DocumentView.asp?DID=183

2. About 2,500 years ago, a Greek mathematician named Pythagoras discovered a special relationship between the sides of right triangles.

3. Pythagoras realized that if you have a right triangle, 3 4 5

4. and you square the lengths of the two sides that make up the right angle, 3 4 5

5. and add them together, 3 4 5

6. you get the same number you would get by squaring the other side. 3 4 5

7. The two sides which come together in a right angle are called

8. The lengths of the legs are usually called a and b. a b

9. The side across from the right angle a b is called the

10. And the length of the hypotenuse is usually labeled c. a b c

11. The Pythagorean Theorem: Given the right triangle with legs a and b and hypotenuse c, a b c then

12. Suppose you drive directly west for 48 miles, 48

13. Then turn south and drive for 36 miles. 48 36

14. How far are you from where you started? 48 36 ?

15. 48 2 Using The Pythagorean Theorem, 48 36 c 36 2 +=c2c2

16. Then all we need to do is calculate:

17. Find the length of a diagonal of the rectangle: 15" 8" ?

18. Find the length of a diagonal of the rectangle: 15" 8" ? b = 8 a = 15 c

19. b = 8 a = 15 c

20. 10 b 26

21. 10 b 26 = 24 (a)(a) (c)(c)

22. On your own Draw a right triangle in the space provided. Measure the lengths of two of the sides. Use Pythagorean Theorem to find the length of the third side. Check your answer by measuring the third side.

23. Homework Work Packet: Pythagorean Theorem