Special Right Triangle Precalculus Review

What type of special triangle is this?

• 45°-45°-90°

• 30°-60°-90°

• Isosceles

• Obtuse

I have been given the short leg in this 30-60-90 triangle.  How do I find the long leg?

• Multiply 4 by 2

• Multiply 4 by √3

• Multiply 4 by √2

• Divide 4 by 2

What is the length of x in this 45-45-90 triangle?

• 4√2

• 4

• 8

• 4√3

Find x.

• 30°

• 45°

• 60°

• 90°

Which side is the long leg in this 30-60-90 triangle?

• 4

• u

• v

I have been given the short leg in this 30-60-90 triangle.  How do I find the length of the hypotenuse?

• Multiply 4 by 2

• Multiply 4 by √3

• Multiply 4 by √2

• Divide 4 by √3

Find the value of x.

• 18

• 18√3

• 36√3

• 12

In this 45-45-90 triangle, I have been given a leg, so to find the other leg I...

• Multiply that leg by 2

• Use the same length for the second leg

• Multiply that leg by √2

• Divide that leg by √2

What is the length of y in this 45-45-90 triangle?

• 8√2

• 4√2

• 4

• 8

What are a and b in this 30-60-90 triangle?

• b=3.5√3 a = 7√3

• b = 7 a = 7√2

• b = 7 a = 14

• b = 7√3 a = 14√3