Special Right Triangles Quiz

What are the two types of special right triangles discussed in the lesson?

• 30-60-90 and 45-45-90

• 30-30-120 and 45-45-90

• 60-60-60 and 30-60-90

• 45-45-90 and 60-60-60

In a 30-60-90 triangle, what is the relationship between the angles?

• The sum of the angles is 360 degrees

• The sum of the angles is 270 degrees

• The sum of the angles is 180 degrees

• The sum of the angles is 90 degrees

What is the length of the side opposite the 30° angle in a 30-60-90 triangle?

• 2x

• x

• x√3

• 3x

If the side opposite the 60° angle in a 30-60-90 triangle is 10, what is the length of the side opposite the 30° angle?

• 5√3

• 5

• 10

• 20

In a 30-60-90 triangle, if the side opposite the 90° angle is 16√3, what is the length of the side opposite the 30° angle?

• 8√3

• 8

• 16√3

• 16

What is the length of the side opposite the 60° angle if the side opposite the 30° angle is 7?

• 7

• 14√3

• 14

• 7√3

If the hypotenuse of a 30-60-90 triangle is 12, what is the length of the side opposite the 60° angle?

• 12√3

• 12

• 6√3

• 6

How do you rationalize a denominator that contains a square root?

• Divide by the square root

• Multiply by the square root

• Add the square root

• Multiply by the conjugate

What is the simplified form of 18/√3?

• 6

• 18√3

• 6√3

• 3√3

What should you remember to solve problems involving 30-60-90 triangles?

• The Pythagorean theorem

• The pattern of side lengths

• The sum of angles in a triangle

• The area formula for triangles