45-45-90 Triangles

What type of triangle is a 45-45-90 triangle?

• Obtuse

• Isosceles

• Scalene

• Equilateral

If the leg of a 45-45-90 triangle is 9, what is the hypotenuse?

• 9√2

• 9

• 18

• 18√2

How do you find the hypotenuse of a 45-45-90 triangle if you know the leg length?

• Divide the leg by √2

• Divide the leg by 2

• Multiply the leg by √2

• Multiply the leg by 2

What is the first step in finding a leg length from the hypotenuse in a 45-45-90 triangle?

• Divide by √2

• Divide by 2

• Add 2

• Multiply by √2

Why do we rationalize the denominator when dividing by √2?

• To simplify the numerator

• To add more radicals

• To make the fraction larger

• To remove the radical from the denominator