AnswersGeometry Concepts and ConnectionsCircles

Circles — Test Answers

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1
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What is the measure of overarc EAC ?

A
280 degrees
B
235 degrees
C
125 degrees
D
100 degrees
2
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What is the measure of arc QR ?

A
52 degrees
B
104 degrees
C
128 degrees
D
26 degrees
3

Which of the following best explains the value of sine pi over 3 on the given unit circle?

A
sine pi over 3 is equal to adjacent over hypotenuse is equal to adjacent over 1 is equal to adjacent The length adjacent to the angle is the vertical distance from the x -axis on the graph.
B
sine pi over 3 is equal to opposite over hypotenuse is equal to opposite over 1 is equal to opposite The length opposite the angle is the vertical distance from the x -axis on the graph.
C
sine pi over 3 is equal to adjacent over hypotenuse is equal to adjacent over 1 is equal to adjacent The length adjacent to the angle is the horizontal distance from the y -axis on the graph.
D
sine pi over 3 is equal to opposite over hypotenuse is equal to opposite over 1 is equal to opposite The length opposite the angle is the horizontal distance from the y -axis on the graph.
4

What is the value of x ?

A
6
B
3
C
2
D
7
5

In circle cap o , what is m angle MAJ ?

A
55 degrees
B
125 degrees
C
50 degrees
D
250 degrees
6

What is the length of the radius, r ?

A
6 cm
B
72 cm
C
18 cm
D
36 cm
7

In the diagram of circle cap A , what is m angle LMN ?

A
120 degrees
B
90 degrees
C
75 degrees
D
135 degrees
8

What is the measure of arc ST ?

A
68 degrees
B
56 degrees
C
112 degrees
D
163 degrees
9

Which segments are congruent?

A
line segment EH and line segment EF
B
line segment GH and line segment FE
C
line segment FG and line segment EH
D
line segment EF and line segment GF

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