LESSON Practice B 3.2 For use with pages...
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Name ——————————————————————— Date ———————————— Copyright © by Holt McDougal. All rights reserved. Geometry Chapter 3 Resource Book 165 LESSON 3.2 Practice B For use with pages 157–164 Find the angle measure. Tell which postulate or theorem you use. 1. If m∠1 5 508, then m∠ 5 5 ? . 5 3 4 2 6 8 1 7 2. If m∠ 4 5 458, then m∠ 6 5 ? . 3. If m∠ 2 5 1308, then m∠ 7 5 ? . 4. If m∠ 6 5 1238, then m∠ 3 5 ? . Find m∠1 and m∠ 2. 5. 1 2 608 6. 1 2 1208 7. 1 2 808 8. 1 2 568 9. 1 2 1178 10. 1 2 1088 Find the values of x and y. 11. x 8 1108 y 8 12. x 8 y 8 13. x 8 958 y 8 14. x 8 758 y 8 15. 1068 y 8 x 8 16. x 8 y 8 LESSON 3.2
Transcript of LESSON Practice B 3.2 For use with pages...
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GeometryChapter 3 Resource Book 165
LESSON
3.2 Practice BFor use with pages 157–164
Find the angle measure. Tell which postulate or theorem you use.
1. If m∠1 5 508, then m∠ 5 5 ? .
5
3 4
2
6
8
1
7
2. If m∠ 4 5 458, then m∠ 6 5 ? .
3. If m∠ 2 5 1308, then m∠ 7 5 ? .
4. If m∠ 6 5 1238, then m∠ 3 5 ? .
Find m∠1 and m∠ 2.
5.
1 2
608
6.
12
1208
7.
1
2808
8.
1
2
568
9.
1
21178
10.
1
2 1088
Find the values of x and y.
11.
x 8
1108y 8
12.
x 8
y 8
13.
x 8958
y 8
14.
x 8758
y 8
15.
1068y 8
x 8
16.
x 8y 8
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LAHGE11FLCRB_c03_162-172.indd 165 1/29/09 7:33:46 PM
Name ——————————————————————— Date ————————————
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GeometryChapter 3 Resource Book166
Find the value of x.17.
808
(x 1 15)8
18.
688
2x 8
19.928
(2x 2 4)8
20.
758
(5x 2 10)8
21.1208
3x 8
22.
1058(x 2 2)8
In Exercises 23–31, complete the two-column proof.
GIVEN: p ⊥ q, q i r
1
2
p
q
r
PROVE: p ⊥ r
Statements Reasons
p ⊥ q 23. ?
∠1 is a right angle. 24. ?
m∠1 5 908 25. ?
q i r 26. ?
∠1 > ∠ 2 27. ?
m∠1 5 m∠ 2 28. ?
m∠ 2 5 908 29. ?
∠ 2 is a right angle. 30. ?
p ⊥ r 31. ?
LESSON
3.2 Practice B continuedFor use with pages 157–164
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3.2
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