Download Geometry B Unit 4B Practice Test Answers As you go through these

Geometry B
Unit 4B Practice Test
Answers
As you go through these answers, do your best to grade yourself so you know where you
stand. Then, spend time reviewing and studying the problems you got wrong so you can do
them better on the actual test. A good idea is to re-work homework problems, and keep looking
back at your notes and homework.
1. 80°
2. a. x = 119; b. x = 10; c. t = 3, t = –7
3.
34
51
4. a. they are proportional; b. they are congruent
5. 21 inches
A  F
6. Similarity ratio is 4:3; B  E ;
AB BC AC


FE ED FD
C  D
7. The figures on the left ARE similar, because all three angle pairs are congruent as well as
all four side length pairs have the same ratio of 4:3; the figures on the right are NOT similar,
the sides do not have the same ratio
8. a. PRQ
UST , because all three side pairs have the same ratio,
so the triangles are similar by SSS~; b. ABC
PQ QR PR


 0.6 ,
UT TS US
EDC , the two 100° angles are
congruent, and ACB  ECD because they are vertical angles, so the triangles are
congruent by AA~; c. JKL
JNM , because JLK  JMN and
triangles are similar by SAS~.
9. B
10. C
11. NO – when you add 7 + 12, the sum is not greater than 19
12. 29 inches, 7 inches (careful here to put the larger number first!)
13. a. AA~; b. DE = 9.75, GF = 9
14. BH = 5.4, CD = 21.3
15. y = 19
16. a. CE; b. FB; c. CG; d. EG; e. AE; f. BD
17. 0.24 miles
KL
JL 4

 , so the
NM JM 3
18. 2.1
19. y = 11
20. 21.3 feet
21. Length: 3.5 inches; Width: 2.75 inches
22. a. 3:1; b. 3:1; c. 81 m; d. 9:1; e. 288m2