Unit Test

Question 1

What are the possible remaining angle measures in triangle ABC with ?

Revolt · Accepted Answer

A: and

Question 2

After a windstorm, a leaning pole makes a 75° angle with the road surface. The pole casts a 15-foot shadow when the sun is at a 45° angle of elevation. About how long is the pole?

Revolt · Accepted Answer

B: 12.2 ft.

Question 3

The length of one leg of an isosceles right triangle is 3 ft. What is the perimeter of the triangle?

Revolt · Accepted Answer

C: ft

Question 4

Which of the following are in the correct order from least to greatest?

Revolt · Accepted Answer

C: 38°, , 80°, ,

Question 5

A plane took off at a 15° angle to the ground and flew in Sydney’s direction. She is standing at a point 25 miles from the point where the plane took off. If the plane has traveled 20 miles in the air, about how far is Sydney from the airplane? Round your answer to the nearest whole number.

Revolt · Accepted Answer

A: 8 mi.

Question 6

If angle B measures 25°, what is the approximate perimeter of the triangle below?

Revolt · Accepted Answer

A: 10.3 units

Question 7

A child designs a flag in the shape of a rhombus, as shown in the diagram below. Which expression can be used to determine the side length of the rhombus?

Revolt · Accepted Answer

A: StartFraction 10 over cosine 30 degree EndFraction.

Question 8

What is the approximate length of arc s on the circle below? Use 3.14 for . Round your answer to the nearest tenth.

Revolt · Accepted Answer

A: 14.1 in.

Question 9

Trigonometric area formula: Area =

Revolt · Accepted Answer

B: 111.3 square units

Question 10

A kite is made up of two isosceles triangles, KIT and KET, with the lengths shown. The top triangle of the kite, ΔKIT, is made from approximately 17 square inches of material.Heron’s formula: Area =

Revolt · Accepted Answer

C: 48 square inches

Unit Test Answers

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