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WorksheetsCircle Parts & Vocabulary
Total questions: 55
Worksheet time: 47mins
Name
Class
Date
1.
The distance around a circle is called the _________.
a)
radius
b)
diameter
c)
circumference
d)
area
2.
The distance between one side of a circle through the center to the other side is the ___________.
a)
circumference
b)
diameter
c)
radius
d)
area
3.
What is the value of pi? (hint: look at your formula sheet)
a)
3,140
b)
33/2
c)
apple
d)
3.14
4.
Point H is the...
a)
Center of the circle
b)
Radius
c)
Point of tangency
d)
None of these
5.
Name the circle.
a)
C
b)
F
c)
A
d)
G
6.
A major arc is named with 3 letters.
a)
True
b)
False
7.
A minor arc measures more than 180 degrees.
a)
True
b)
False
8.
A circle has only one radius.
a)
True
b)
False
9.
Name a radius.
a)
AF
b)
CD
c)
HJ
d)
DG
10.
How many chords?
a)
1
b)
2
c)
3
d)
none
11.
Name a secant.
a)
BD
b)
DG
c)
HF
d)
AF
12.
Name the diameter.
a)
BD
b)
AF
c)
BJ
d)
HF
13.
If a circle has a radius of 4 cm what is the diameter?
a)
2 cm
b)
4 cm
c)
8 cm
d)
4 cm2
14.
If a circle has a diameter of 4cm what is the radius?
a)
2 cm
b)
4 cm
c)
8 cm
d)
8 cm2
15.
What is m called?
a)
Arc
b)
Segment
c)
Chord
d)
Circumferece
16.
What is the line DE called?
a)
Arc
b)
Segment
c)
Chord
d)
Circumference
17.
What is the diameter?
a)
DE
b)
AO
c)
AB
d)
OC
18.
What is the section marked COB called?
a)
segment
b)
sector
c)
chord
d)
section
19.
What does "circumference" mean?
a)
Space a circle takes up
b)
Distance around a circle
c)
Line from one side of a circle to another
d)
Line from center of circle to side
20.
If the diameter is 5 cm what is the radius?
a)
2.5 cm
b)
5 cm
c)
10 cm
d)
5π
21.
If the diameter is 10 cm what is the circumference
a)
10π
b)
5π
c)
100π
d)
25π
22.
The line segment between the center and a point on the circle is the
a)
Radius
b)
Diameter
c)
Chord
d)
Tangent
23.
The distance around a circle is the
a)
Diameter
b)
Radius
c)
Circumference
d)
Area
24.
If the diameter of a circle is 10 cm, the radius is 5 cm.
a)
TRUE
b)
FALSE
25.
The distance across a circle through the center is called the_______________.
a)
radius
b)
circumference
c)
diameter
d)
area
26.
What is the diameter?
a)
5 in
b)
10 in
c)
3.14 in
d)
15.84 in
27.
Is the red line a radius or diameter of the circle?
a)
Radius
b)
Diameter
28.
Is the red line a radius or diameter of the circle?
a)
Radius
b)
Diameter
29.
A circular swimming pool is 21 feet in diameter.
How many feet around is the pool?
How many feet around is the pool?
a)
10.5 ft
b)
42 ft
c)
65.94 ft
d)
131.95 ft
30.
The diameter of a circle is:
a)
The measurement around the circle.
b)
The distance from an edge of a circle to another edge.
c)
The distance from the center of the circle to an edge of a circle
d)
The distance from an edge of a circle to another edge through the center.
31.
The formula to find the CIRCUMFERENCE of a circle is...
a)
C = Π r 2 (pi x radius squared)
b)
C = L x W
c)
C = Π d (pi x diameter)
32.
TRUE OR FALSE: A radius is longer than a diameter.
a)
TRUE
b)
FALSE
33.
The formula to find the area of a circle is.....
a)
A = Π d (pi x diameter_
b)
A = 2 Π r (2 x pi x radius)
c)
A = Π r2 (pi x radius squared)
34.
Name the minor arc subtended by the given angle.
a)
A
b)
B
c)
C
d)
D
35.
A ____ is a line, ray, or segment that intersects a circle at two points.
a)
Tangent
b)
Secant
c)
Radius
d)
Arc
36.
An angle is a(n) ______ if the vertex is on a circle and the sides of the angle are shords of the circle.
a)
right angle
b)
acute angle
c)
inscribed angle
d)
intercepted angle
37.
A(n) _____ to a circle is a line, ray or segment in the plane of the circle that intersects the circle in exactly one point.
a)
tangent
b)
secant
c)
radius
d)
arc
38.
Segments with endpoints on a circle are called _____.
a)
arcs
b)
radii
c)
chords
d)
polygons
39.
What best describes segment AB?
a)
chord
b)
secant
c)
tangent
d)
diameter
40.
Solve for the missing angle.
a)
45o
b)
90o
c)
22.5o
d)
128o
41.
What is the measure of the angle formed between the hands of the clock?
a)
30
b)
90
c)
120
d)
150
42.
Which best describes segment AB?
a)
chord
b)
secant
c)
tangent
d)
diameter
43.
Which best describes line AB?
a)
chord
b)
secant
c)
tangent
d)
diameter
44.
Point C is...
a)
On the circle
b)
Outside the circle
c)
Inside the circle
d)
Between B and D
45.
What is the measure of arc WYZ?
a)
231
b)
255
c)
168
d)
200
46.
What is the measure of arc AB?
a)
140
b)
142
c)
180
d)
153
47.
Which number best represents a central angle?
a)
1
b)
2
c)
5
d)
9
48.
Which best describes line AB?
a)
chord
b)
secant
c)
tangent
d)
diameter
49.
Which best describes line AB?
a)
chord
b)
secant
c)
tangent
d)
diameter
50.
If the endpoints of an arc lie on a diameter, the arc is a ....
a)
major
b)
minor
c)
semicircle
d)
sector
51.
What is the measure of ∠PTQ?
a)
100°
b)
140°
c)
180°
d)
120°
52.
Name a major arc.
a)
ABD
b)
BDA
c)
BCD
d)
DA
53.
Name a minor arc
a)
AD
b)
ADB
c)
AB
d)
CD
54.
An angle in a circle with vertex on the circle itself
a)
Angle
b)
Central angle
c)
Inscribed angle
d)
Chord
55.
An angle in a circle with vertex on the center of the circle
a)
Central angle
b)
Angle
c)
Inscribed angle
d)
Circle
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