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Geo Arc Measures Math 2
Contributed by: Jarvie
(Original author: Lehnert)
An ARC of a circle
is part of the
CIRCUMFERENCE
The ARC of a circle has the same angle measure
as the central angle that forms it.
120
central angle
?
arc
?

Drag the words

to the ?

MQ and NR are diameters.  Find the indicated

measure.

(arc MN has the same measure as angle MON)
N

M

82
P
O
63
Q

arc MN =

R

MQ and NR are diameters.  Find the indicated

measure.

arc QR
N

M

82
P
O
63
Q
R

MQ and NR are diameters.  Find the indicated

measure.

N

M

82
P
O
63
Q

arc PQ =

R

MQ and NR are diameters.  Find the indicated

measure.

arc NQ
N

M

82
P
O
63
Q
R

MQ and NR are diameters.  Find the indicated

measure.

arc NQR
N

M

82
P
O
63
Q
R

MQ and NR are diameters.  Find the indicated

measure.

arc MR
N

M

82
P
O
63
Q
R

MQ and NR are diameters.  Find the indicated

measure.

arc PRN
N

M

82
P
O
63
Q
R
Drag the words/degrees to the ?

put unused piece here: 

A
90o
F
E
B
C
D

30o

?
Arc CEA
Arc AB

m BE =

m BC =
m AE =
Arc BAE

minor arc

?

major arc

?

180o

?

45o

?

90o

?

semicircle

?

Find the measures of the given arcs. 

Do not write the degrees--only write the numbers!

For example Arc QR = 73 (do not put 73 degrees)

 

N
M
P
81o
73o

Q

R
MN =
MPR =
MR =
PQ =
o
o
o
o

Is AB ≅ CD?

A
C
xo
yes or no
xo
B
D

Is AB ≅ CD?

A
B
63o
54o
yes or no
C
D

Is AB ≅ CD?

D
C
85o
yes or no
85o
A
B

Is AB ≅ CD?

D
C
B
A
77o
yes or no
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