1. Section 8.4 Special Right Triangles VERY VERY VERY VERY IMPORTANT SAT SECTION

2. Draw the following. 1) D raw a right triangle. 2) T he remaining angles are 45o. 3) O ne leg has a length of 4. 4) F ind the missing lengths. Use Pythagorean Theorem and your mind! 5) H INT: You have two congruent angles! 45 o 4 4

3. Draw the following. 1) Draw a right triangle. 2) The remaining angles are 45 o. 3) One leg has a length of 17. 4) Find the missing lengths. 17 45 o

4. Draw the following. 1) Draw a right triangle. 2) The remaining angles are 45 o. 3) One leg has a length of. 4) Find the missing lengths. 45 o

5. What is the formula? 45 – 45 – 90 Triangle a a

6. Practice Problem #1 a a a = 8 x = 8 o o o o

7. a a Practice Problem #2 x y o o 45 o 8 WORK BACKWARDS!

8. Draw the following. 1) Draw a right triangle. 2) The remaining angles are 30 o and 60 o. 3) One leg has a length of 7 (opposite of 30 o ). 4) The hypotenuse is 14. 5) Find the missing leg length. 30 o 60 o 7 14

9. Draw the following. 1) Draw a right triangle. 2) The remaining angles are 30 o and 60 o. 3) One leg has a length of 11 (opposite 30 o ). 4) The hypotenuse is 22. 5) Find the missing leg length. 30 o 60 o 11 22

10. Draw the following. 1) Draw a right triangle. 2) The remaining angles are 30 o and 60 o. 3) One leg has a length of Opp of 30 o. 4) Find the missing length. 30 o 60 o

11. o o What is the formula? 30 – 60 – 90 Triangle a 2a

12. Practice Problem #3 WORK BACKWARDS! o a 2a o 8 = 2a a = 4 which is y so y = 4

13. PRACTICE Page 301 Page 301 Classroom Exercises Classroom Exercises #1 – 9 #1 – 9