Let's Review - Special Right Triangles

Front

What is a 30-60-90 triangle?

Back

A special right triangle where the angles are 30°, 60°, and 90°. The sides are in the ratio 1 : √3 : 2.

Front

How do you find the hypotenuse in a 30-60-90 triangle if the short leg is known?

Back

Multiply the length of the short leg by 2.

Front

What is the length of the short leg in a 30-60-90 triangle if the long leg is 7?

Back

Divide the length of the long leg by √3.

Front

What is the relationship between the sides of a 45°-45°-90° triangle?

Back

The sides are in the ratio 1 : 1 : √2.

Front

How do you find the length of the long leg in a 30-60-90 triangle if the short leg is known?

Back

Multiply the length of the short leg by √3.

Front

What is the length of the hypotenuse in a 30-60-90 triangle if the short leg is 4?

Back

8 (4 multiplied by 2).

Front

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

Back

An isosceles right triangle where the two legs are equal in length.

Front

If the hypotenuse of a 30-60-90 triangle is 10, what is the length of the short leg?

Back

5 (10 divided by 2).

Front

What is the length of the long leg in a 30-60-90 triangle if the short leg is 5?

Back

5√3 (5 multiplied by √3).

Front

How do you find the length of y in a 45°-45°-90° triangle if one leg is 5?

Back

y = 5 (both legs are equal in length).