AnswersCR CCSS Math 2 S2 M2960OXSolving for Side Lengths of Right Triangles

Introduction to Circles Answers

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Circle B is shown. Line segments C B, D B, and E B are radii. Angle C B E is 52 degrees and angle E B D is 160 degrees.

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A
106°
B
108°
C
148°
D
212°
2
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In circle O, RT and SU are diameters.

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A
47°
B
52°
C
64°
D
87°
3

Circle X with a radius of 6 units and circle Y with a radius of 2 units are shown.

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A
Translate the circles so they share a common center point, and dilate circle Y by a scale factor of 4.
B
Translate the circles so the center of one circle rests on the edge of the other circle, and dilate circle Y by a scale factor of 4.
C
Translate the circles so they share a common center point, and dilate circle Y by a scale factor of 3.
D
Translate the circles so the center of one circle rests on the edge of the other circle, and dilate circle Y by a scale factor of 3.
4

In circle O, ST is a diameter.

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A
22.0
B
25.0
C
25.4
D
37.2
5

In circle O, and are diameters. Arc ED measures 17°.

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A
107°
B
180°
C
253°
D
270°
6

In circle O, AC and BD are diameters.

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A
50°
B
80°
C
100°
D
130°
7

In circle O, SU is a diameter.

Question illustration
A
100°
B
108°
C
130°
D
160°
8

Circle D is shown. Line segments E D, F D, and G D are radii. Angle E D F is 80 degrees and angle F D G is 35 degrees. Point H is on the other side of the circle.

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A
m + 80 + 35 = 180
Option A
B
m + 80 + 35 = 360
Option B
C
m – 80 – 35 = 360
Option C
D
m – 80 – 35 = 180
Option D
9

In circle O, and are diameters. The measure of arc DC is 50°.

Question illustration
A
40°
B
90°
C
140°
D
220°
10

Circle B is shown. Line segments C B, D B, and E B are radii and they form 3 congruent angles.

Question illustration
A
a minor arc
B
a major arc
C
a semicircle
D
a chord
11

Segments AC and BD are diameters of circle O.

Question illustration
A
107°
B
146°
C
253°
D
287°

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