Test #8 Review
Good Luck to: ______________________________
Period _____
Round all answers to the nearest hundredth.
Solve for “x”
1.
x 3
5

12
6
1. _____________________
2.
2x
8

4
x
2.______________________
3.
x 3
2x

3
5
3. _____________________
Determine whether the two triangles are similar. If yes, state the reason that justifies your answer
(AA,SAS,SSS).
4.
4. similar? ________
10
5
2
4
reason ________
5
2
3
9
5.
55°
5. similar? ________
55°
12
reason ________
4
.
8
6.
6. similar? ________
50
98
reason ________
98
50
Find the values of “x” and “y” so that the following triangles are similar. Set up ratios!!
7. ABC  DEF
7.Equation for “x” ____________________
A
D
x = ________
15
10
y
26
B
x
Equation for “y” ____________________
C
E
24
F
y = ________
8. MNO  ANB
8.Equation for “x” ____________________
M
x = _______
6
A
Equation for “y” ____________________
x
48
20
N
y = _______
y
B
4
O
9. MN || EF (THIS MEANS MN IS PARALLEL TO EF)
. Find “x” and “y”.
9.x = ________
y = ________
D
24
18
28
M
N
46
x
E
F
y
10
10.x = ________
6
4x
2
5
11
11.x= ________
11
16.5
6
x
12. Given ABC
RST , find the perimeter of RST if the scale factor of ABC to RST is
3
4
.
12. __________________
13. Find x.
13. x=____________
.
Find the indicated, missing values for each of the following. Show work to receive credit.
14. If a 3 meter flagpole casts a 12 meter shadow at the same time as a nearby
building casts a 20 meter shadow. How tall is the building?
14. ________
15. The scale factor of two similar polygons is 2:5. The perimeter of the larger
polygon is 200 centimeters. What is the perimeter of the smaller polygon?
15. ________
16. A photographer enlarged a 5 in. X 7 in. photograph by multiplying each dimension
by a factor of
photograph.
7
. Use proportions to find the width “x” and length “y” of the enlarged
6
16. ______
17. A copy machine can enlarge or reduce letters proportionately. Which would not be an
enlargement or reduction of the letter below?
17.__________
1.5 cm
6.5 cm
A.
B.
1 cm
2.5 cm
4.33 cm
10.833 cm
4.5 cm
C.
4.8 cm
D.
19.5 cm
13 cm
Use the following points to answer questions 18 and 19.
A(3, -5) and B(2, 7)
18. Find the distance AB rounded to the nearest tenth.
18. AB= ___________
19. Find the Midpoint of AB.
19. ______________
20. Find the slope of AB.
20. _______________