We spent time going over homework to start the period before going through some review exercises for our quiz tomorrow. We went through a circle proof, as well as several different types of drawings involving tangent lines together. The students then got started on their review packet in preparation for the quiz tomorrow. The answers to the packet will appear on this blog later in the day.
Assignment: Review worksheet section 9-1 to 9-4
Basic Terms; Tangents
1. segment OT, segment OB
2. segment BT
3. line AB
4. line TS
5. segment AB, segment BT
6. point T
7. 8
8. 8n
9. 90
10. segment QP and segment QR
11. perpendicular
12. 6
13. 6 radical 2
14. ABCD
15. OP = 15
16. RS = 8
17. HI = 28
18. 15
19. 18
20. 12
Arcs, Central Angles, and Chords
1. 90
2. 135
3. 135
4. 225
5. 45
6. 55
7. 20
8. 60
9. 150
10. 11 or 1 o clock
11. 12
12. 8 radical 3
13. 60
14. 120
15. 120
16. 4 radical 3
17. 9
18. 9
19. 24
20. 14
Tangents, Arcs, and Chords
1. 5
2. segments PR, PQ, and PS
3. tangent
4. inscribed
5. 58
6. arc RQ and arc QS or arc RP and arc PS
7. segment RP and segment PS
8. AD = 9; BC = 5
9. arc JK = 130; arc HKJ = 310
10. LM = 3 radical 3
11. Proof steps below
angle AOD congruent to angle COD Given
angle AOD + angle AOB = 180 Angle Addition Postulate
angle COD + angle BOC = 180 Angle addition postulate
angle AOD congruent to angle BOC Substitution
arc AB congruent to arc BC in same circle, if central angle is
congruent, then arcs are congruent
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