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UNIT 10 - CIRCLES - QUIZ #1 Flashcards | StudBud
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UNIT 10 - CIRCLES - QUIZ #1
Which of the following is a tangent of the circle?
The diameter is..
UNIT 10 - CIRCLES - QUIZ #1
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1
The diameter is..
2 times the radius
π
1/2 of the radius
3.14
2
Which of the following is a tangent of the circle?
line segment DC
line DE
line FG
line CG
3
How many degrees are in a Major Arc?
90 Degrees
More than 180 degrees
180 degrees
Less than 180 degrees
4
Find the length of the arc
7.3
20.2
15.7
6.3
5
Which of the following is a secant of the circle?
line FG
line DE
line segment BC
line segment AE
6
Find the measures of all central angles.
100
70
80
90
7
A central angle is
2 times its intercepted arc
1/2 its intercepted arc
equal to its intercepted arc
always supplementary to its intercepted arc
8
Name the Central Angle.
∠CAE
∠EAC
∠BCD
∠CBA
9
Find the measure of the arc or central angle indicated.
140
1400
210
70
10
find diameter of circle
30
7
11
What is the formula for area of a circle?
A = πr2
A = lw
A = Cπ
A = πd
12
Find the length of the arc
68.1
24.5
18.8
20.4
13
Find the measure of the arc or central angle indicated.
125°
101°
130°
142°
14
What is the formula for circumference of a circle?
C = 2πr
C = πd
C = πr2
C = πd2
15
Trigonometry
13/5
12/5
13/12
5/12
16
What phrase to remember the trigonometry functions
SOH-CAH-TOA
SAH-COA-TOH
SOH-CAH-TAO
SCT-OHO-HHA
17
Minor arcs have an arc measure of less than...
180 degrees
360 degrees
90 degrees
190 degrees
18
Define a chord.
a line that travels through a circle at two points on the circumference
a series of points equidistant from the center
Segment connecting 2 points on the circumference
a line that intersects the circle exactly once
19
∠BCA is an inscribed angle.
True
False
20
In right triangle FHG, the sin of angle F is 0.60. What is the cos of angle H? Round hundredth.
0.83
0.60
0.53
0,50
21
What line divides a circle into two semicircles?
radius
diameter
chord
tangent
22
Angle A is the complement of angle B. Which equation about the two angles must be true?
cos A = sin B
sin A = cos A
cos B = sin B
sin A = sin B
23
Trigonometry
12/13
5/13
13/5
5/12
24
All radii in a circle are congruent
True
False
25
A central angle has its vertex at the center of the circle and its sides are radii.
False
True
26
Find the length of the arc
10.4
8.4
7.3
11.6
27
What is the diameter of a circle?
the distance across a circle through its center
the distance from the center to any point on the circle
the distance from any point on the circle to any other point
the distance around a circle
28
A semicircle has exactly 180 degrees.
False
True
29
Name one or more Minor Arcs
IR
CR
CIR
CI
30
Find the measure of the arc or central angle indicated.
57°
85°
70°
74°
31
An inscribed angle has its vertex at the center of the circle and its sides are chords
False
True
32
Chord
Set of all points equidistant from a given point
A line that intersects a circle at two points.
A segment whose endpoints are on a circle.
33
What is the definition of
diameter
?
A line segment straight across a circle, through the center.
The distance from the center of a circle to one side.
Adding all the sides of the circle together... wait... what?
The distance once around the circle.
34
What is the definition of
radius
?
Adding all the sides of the circle together... wait... what?
The distance from the center of a circle to one side.
A line straight across a circle, through the center.
The distance once around the circle.
35
Angles
11
57
123
169
36
Is the arc a major arc, minor arc, or semi-circle? Arc DFB
Semi-Circle
Minor
Major
37
Find the circumference of this circle.
10cm
9cm
17.84cm
9.42cm
38
Name a major arc
ADC
BC
ABC
AC
39
Which one(s) are radii?
CX
CZ
ZY
XY
40
Name 2 major arcs
ABE and CAE
ABC and BCD
AED and CDE
DCA and DCB
41
Name 2 Semicircles
ABD and ABC
ABC and ACD
ADC and ABC
ABC and AB
42
Name a chord:
segment BC
segment DE
segment OC
segment AO
43
Definition of a circle
points that are equidistant from the middle of the circle
a part of a line that is bounded by two distinct points
an infinite amount of points
44
The formula for arc length is L=\frac{θ}{360}\cdot2\pi r. True or false?
False
True
45
Which lines are a tangent and congruent to each other?
None of them
FE
FA & AC
GF & GC
