Circle Vocab
Central Angles
Inscribed Angles
Interior Angles
Exterior Angles
100
The portion of a circle in between two points.
What is a Arc?
100
Find m∠arc PRQ.
m∠arc PRQ = 275°
100
Find the measure of the angle indicated. file:///home/chronos/u-910a9a46ccefbfc6d00c67df0fae307686a4f2e4/MyFiles/Downloads/Screenshot%202023-04-21%2010.03.23%20AM.png
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The measure of the angle is 40°
100
Find x.
x = 100°
100
Find x.
file:///home/chronos/u-910a9a46ccefbfc6d00c67df0fae307686a4f2e4/MyFiles/Downloads/Screenshot%202023-04-21%2011.27.16%20AM.png
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x = 20°
200
A straight line segments whose endpoints lie on the edge of the circle.
What is a Chord?
200
Find m∠arc BC.
m∠arc BC = 57°
200
Find the measure of the arc indicated.
file:///home/chronos/u-910a9a46ccefbfc6d00c67df0fae307686a4f2e4/MyFiles/Downloads/Screenshot%202023-04-21%2010.10.26%20AM.png
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The measure of the arc is 84°
200
Find x.
x = 117°
200
Find x.
file:///home/chronos/u-910a9a46ccefbfc6d00c67df0fae307686a4f2e4/MyFiles/Downloads/Screenshot%202023-04-21%201.14.58%20PM.png
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x = 170°
300
A line that intersects a circle in exactly one point.
What is a Tangent?
300
Find m∠arc CD. 
m∠arc CD = 55°
300
What is m∠ACB?
m∠ACB = 69°
300
Find x.
file:///home/chronos/u-910a9a46ccefbfc6d00c67df0fae307686a4f2e4/MyFiles/Downloads/Screenshot%202023-04-21%2011.09.03%20AM.png
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x = 46°
300
Find x.
x = 124°
400
A line that intersects a circle in two points.
What is a Secant?
400
Find m∠arc QP.
m∠arc QP = 45°
400
What is the measure of arc AC?
The measure of arc AC is 120°
400
Find x.
Replace 19° with 12°. Replace 107° with 124°.
x = 68°
400
Find x.
Swap 45° for 70° and 80° for 128°.
file:///home/chronos/u-910a9a46ccefbfc6d00c67df0fae307686a4f2e4/MyFiles/Downloads/Screenshot%202023-04-21%201.14.58%20PM.png
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x = 268°
500
The distance from the center of the circle to the edge, half of the diameter.
What is a Radius?
500
Find m∠arc QTR.
m∠arc QTR = 306°
500
Find the value of x. 
The value of x is 160°
500
Find x.
Replace 129° with 150°. Replace 71° with 98°.
x = 124°
500
Find x.
file:///home/chronos/u-910a9a46ccefbfc6d00c67df0fae307686a4f2e4/MyFiles/Downloads/Screenshot%202023-04-21%202.29.42%20PM.png
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x = 25°