Mrs. Pakula
Unit 9 – Circles
Name: _______________________________
Date: _________________ Hour: ________
9.C.7 and 9.C.8 Homework – Review for Unit 9 Test
Use
Textbook Ch 10 and 11
P to draw the described part of the circle.
1. Draw a diameter and label it AB .
2. Draw a chord and label it GH .
3. Swimming Pool You are standing 36 feet from a circular swimming pool. The distance from you to a point of tangency on the pool is 48 feet as shown. What is the radius of the swimming pool.
In U, determine whether the given arc is a minor arc, major arc, or semicircle. PR and QS are diameters of U. Find the measure of the indicated arc.
4. mTPS
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5. m RT
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6. m QR
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7. m PQS _______________________________
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8. m PTR _______________________________
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Two diameters of
9.
m PS
11. m PRQ
T are PQ and RS . Find the given arc measure if m PR = 35°.
10. m PSR
12. m PRS
Find the measure of the indicated angle or arc in
13. m AB
14. m∠A
P.
16. m VST
15. m∠K
Find the values of the variables.
17.
20. Find the value of x.
18.
19.
For #21 and 22, write the standard equation of the circle.
21.
Honors Geometry
9.C.7 and9.C.8 Homework – Review for Unit 9 Test
22. Center (4, –7), radius 9
Page 2 of 5
Use the given information to write the standard equation of the circle.
23.
The center is (2, 4), and a point on the circle is (–3, 16).
24. Earthquakes After an earthquake, you are given seismograph readings from three locations, where the coordinate units are miles.
At A(2, 1), the epicenter is 5 miles away.
At B(–2, –2), the epicenter is 6 miles away.
At C(–6, 4), the epicenter is 4 miles away.
a. Graph three circles in one coordinate plane to represent the possible epicenter locations