Unit 7 Review: Right Triangles

Which set of numbers may represent the lengths of the sides of a right triangle?

• {6,8,10}

• {4,7,10}

• {6,6,12}

• {5,12,16}

Level 4

Solve for x.

• 38.9

• 40.2

• 45.6

• 54

A piece of paper that Brittany has is 11 inches tall and 8 inches wide. She draws a straight line diagonally across the paper. How long is the line she drew?

• 7.5 in
• 12.4 in
• 13.6 in 
• 14.3 in

Acute, right, or obtuse?

• Acute
• Right
• Obtuse
• I don't know

Find x.

• 4
• 2
• √3
• 2√2

I have been given a hypotenuse in this 45-45-90 triangle.  How do I find the length of a leg of the triangle?

• Multiply by √2
• Divide by √2
• It's the same length as the hypotenuse.
• Divide by 2

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

• Divide 8 by √3
• Divide 8 by 2
• Divide 8 by 2, then multiply that answer by √2
• Divide 8 by √3, then multiply that answer by 2

Simplify:

• √12
• (4√3)/3
• √3
• (2√3)/3

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

• 8√2
• 4√2
• 4
• 8

What are x and y in this 30-60-90 triangle?

• x = 6 y = 3√3
• x = 3√2 y = 3
• x = 3√3 y = 6
• x = 6 y = 3√2