1. Special Right Triangles
Isosceles Right Triangles
45 –

2. 1
= x2
45o
2 = x2 1 x
45o

3. Ratio Leg:Leg:Hypotenuse1
leg 1
leg
hypotenuse

4. Isosceles right triangles are all similar

5. Ratio Leg:Leg:Hypotenuse1
leg 1
leg
hypotenuse

6. Ex. # 1 – Find the lengths of missing sidesy
5cm

7. 30 – 60 – 90 Triangles

9. 12 + x2 = 22
x2 = 3
30o 2 2 x ?
60o 1 2

10. 2 1 Ratio, hypotenuse:short leg:long leg 30o long leg hypotenuse 60o

11. 30 – 90 – 60 triangles are all similar

12. 2 1 Ratio, hypotenuse:short leg:long leg 30o long leg hypotenuse 60o

13. 2 1 Ex. # 2 – Find the lengths of the missing sides 30o hypotenuse
long leg
60o 1
short Leg y y 7
60o
30o x

14. 451/ /32,35