Special Triangle 45-45-90

Is this a 45-45-90 triangle?

• Yes

• No

• No clue

Is this a 45-45-90 triangle?

• Yes

• No

• No clue

If you are given the LEG of a 45-45-90 triangle, how do you find the HYPOTENUSE?

• Multiply by 2

• Divide by 2

• Multiply by √2

• Divide by √2

If you are given the HYPOTENUSE of a 45-45-90 triangle, how do you find the LEG?

• Multiply by 2

• Divide by 2

• Multiply by √2

• Divide by √2

If you are given the LEG of a 45-45-90 triangle, how do you find the OTHER LEG?

• Multiply by √2

• Divide by √2

• They're congruent

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

• 4√2

• 4

• 8

• 4√3

Find the value of y.

• 11√2

• 11

• 22

• (11√2)/2

Find the missing side lengths.

• a = 4, b = 4

• a = 4, b = 2√2

• a = 2√2,  b = 4

• a = 4, b = 4

Use the 45-45-90 theorem to solve for the hypotenuse.

• 16

• 8

• 8√2

• √16

If the equal sides of an isosceles right triangle measure 12 units, then the measure of the hypotenuse is _____ units.

• 12√2

• 2√12

• 144

• 144√2