We spent time going over the chapter 9 review sheet today and answering any questions that may have come up. We then went through one more triangle proof that involved properties of circles. The rest of the period was spent celebrating pi day by eating the pies that the students brought in. We also worked on the 2nd review sheet for the test while we were eating pie!
Assignment: Chapter 9 Review Sheet #2
Review Sheet Answers
Practice 36
1. 100
2. 26
3. 30
4. 50
5. 155
6. 90
7. 40
8. 20
9. 90
10. 110
11. 6
12. 13 1/3
13. 40
14. 12
15. x = 6 or x = 4
Practice 37
1. segment AD
2. segment OA, segment OD, segment OC
3. segment AC, segment AD
4. segment BA, segment BC
5. 110
6. 55
7. 90
8. 55
9. 70
10. 5
11. 120
12. 30
13. 15
14. 4
15. 8
16. 2
17. proof
Statements Reasons
angle G congruent to angle H given
OF perp. to FG; OI perp. to HI given
angle GFO and angle HIO rt. angles def. of perp.
angle GFO congruent to angle HIO all right angles congruent
OH congruent to OG all radii of same circle congruent
triangle GFO congruent to tri. HIO AAS
OF congruent to OI CPCTC
EG congruent to HJ in same circle, if chords are same
distance from center, then chords
are congruent
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