1. Special Right Triangles

2. In a 45-45-90 triangle, the length of the hypotenuse is equal to times the length of a leg. Hypotenuse

3. E1E2 45 2 x x 6

4. E3 E4 45 7 x x 12

5. E5 Find the perimeter of a square with a diagonal of 16 in.

6. FromToBy Doing…. 45-45-90LegHypotenuse* Leg÷

7. In a 30-60-90 triangle, the hypotenuse is 2 times the length of the short leg and the long leg is times the length of the short leg. 30 60 Short Long Hypotenuse s s 2s

8. E1 Find x and y. 30 60 3 x y

9. 30 60 x y 8 30 60 6 y x E2 E3

10. 30 60 7 y x 30 60 y x E4 E5

11. E6 The perimeter of an equilateral triangle is 54. Find the altitude of the triangle.

12. FromToBy Doing…. 30-60-90ShortLong* ShortHypotenuse*2 HypotenuseShort÷2 LongShort÷ 45-45-90LegHypotenuse* Leg÷

13. Trig Review WS 2