Answers191 CR GeometryIntroduction to Circles

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1
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In circle cap d , which is tangent to the circle?

A
line segment CD
B
line segment EF
C
over left right arrow GH
D
over right arrow AB
2
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What is the measure of overarc CED ?

A
108 degrees
B
212 degrees
C
148 degrees
D
106 degrees
3

What is the measure of overarc ADB ?

A
253 degrees
B
146 degrees
C
287 degrees
D
107 degrees
4

In circle cap d , which is a secant?

A
line segment EF
B
over right arrow AB
C
line segment DC
D
over left right arrow GH
6

What is the measure of minor arc overarc EG ?

A
149 degrees
B
17 degrees
C
75 degrees
D
211 degrees
7

Which equation can be used to find the measure of overarc EHG ?

A
m overarc EHG minus 80 minus 35 is equal to 180
B
m overarc EHG plus 80 plus 35 is equal to 360
C
m overarc EHG minus 80 minus 35 is equal to 360
D
m overarc EHG plus 80 plus 35 is equal to 180
8

How are the semicircle and the diameter of a circle related?

A
The length of the diameter and the length of the semicircle are the same.
B
The angle measure of the diameter is half the angle measure of the semicircle.
C
The degree measure of the diameter and the degree measure of the semicircle are the same.
D
The angle measure of the diameter is twice the angle measure of the semicircle.
9

Which is true regarding chords and diameters of circles?

A
Both chords and diameters have two endpoints on a circle. Chords must intersect the center of a circle.
B
Both chords and diameters have two endpoints on a circle. Diameters must intersect the center of a circle.
C
Chords have two endpoints on a circle. Diameters have one endpoint on a circle and one at the center.
D
Chords have one endpoint on a circle and one at the center. Diameters have two endpoints on a circle.
10

What does overarc CDE describe?

A
a major arc
B
a semicircle
C
a chord
D
a minor arc

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Pretest Answers — 191 CR Geometry