Unit 4 Retest

Front

What is the length of MN? Round to the nearest tenth of an inch.

Back

38.5 in

Front

What is the measure of PQ in ∆PQR, a special right triangle?

Back

6√2

Front

How many centimeters long is a side of a square with a diagonal that measures 4 √2 centimeters?

Back

4

Front

What is the measure of SU in ΔTSU, a special right triangle?

Back

24

Front

In a right triangle ΔDEF, where m∠E = 90°, m∠F = 35°, and DF = 6 meters, which equation can be used to find d?

Back

cos 35° = d/6

Front

What is the Pythagorean theorem?

Back

a² + b² = c², where c is the hypotenuse.

Front

Define a special right triangle.

Back

A triangle with angles of 30°, 60°, and 90° or 45°, 45°, and 90°.

Front

What is the relationship between the sides of a 30-60-90 triangle?

Back

The sides are in the ratio 1:√3:2.

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 diagonal of a square?

Back

Use the formula d = s√2, where s is the side length.