Pre Alg: Practice 8.8 A

1. SON Name ____________________________________________________ Date __________
LES
8.8 Practice416–421 A
For use with pages
In Exercises 1 and 2, name the similar polygons.
1. 2. R
10 mm
A B
W
5 in.
10 in.
5 mm F 4 in.
E 6 in.
6 mm
3 mm
Y 3 in. X
H G
D C S T
5 mm 2.5 mm 8 in.
3. TABC is similar to TEFG. Find the value of x.
B
32 yd x
A
C
F
9 yd 24 yd
E G
4. Quadrilateral WXYZ is similar to quadrilateral LMNP. Find the values of
x and y.
W X 5 ft
12 ft
42 163
Z L M
P
x
20 ft
y
N
Y
In Exercises 5–9, graph the polygon with the given vertices. Dilate by
the scale factor k and graph the image.
5. A(2, 2), B(1, 2), C(2, 1), D(1, 1); k  4
6. W(1, 3), X(4, 1), Y(4, 1); k  2
Lesson 8.8
1
7. L(2, 2), M(2, 6), N(6, 10), Q(6, 0); k �
2
1
8. E(8, 0), F(0, 8), G(8, 0), H(0, 8); k �
4
9. J(1, 3), K(2, 5), L(5, 4), M(5, 3), N(2, 0); k  3
10. You are making a large gingerbread house that is similar in shape to a real
house. The real house is 25 feet tall and 40 feet wide. The gingerbread
house is 2.5 feet tall. How wide should you make the gingerbread house?
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Middle School Math, Course 3
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