Pre Alg: Practice 8.8A

1. SON Name ____________________________________________________ Date __________
LES
8.8 Practice416–421 B
For use with pages
In Exercises 1 and 2, name the similar polygons.
1. A 2.
100 ft K
B 20 ft
M N
S
40 ft
10 cm
5 cm 5 cm
50 ft
3 cm R
D C
100 ft
J L
P Q 10 cm
20 ft 1.5 cm T
3. TABC is similar to TRST. Find the value of x.
B R
x
8 ft
T S
2 ft
A
C 24 ft
4. Quadrilateral WXYZ is similar to quadrilateral LMNP. Find the values of x and y.
W
15 in. y
X N
Z
13 in. P
39 in.
115 x
M
91 in. L
38 Y
In Exercises 5–9, graph the polygon with the given vertices. Dilate by
the scale factor, k, and graph the image.
5. A(1, 1), B(2, 1), C(4, 4), D(1, 4); k  3
6. W(1, 6), X(5, 4), Y(4, 1); k  4
1
7. L(0, 0), M(0, 6), N(6, 9), Q(3, 3); k �
3
Lesson 8.8
2
8. E(10, 5), F(5, 0), G(5, 5), H(10, 5); k �
5
9. J(2, 2), K(2, 0), L(5, 0), M(8, 2), N(5, 4), Q(2, 4); k  2
10. Brad had planned to put in a rectangular garden that was 12 feet by 8 feet.
He decided that it was too big. He decided to reduce the dimensions of
the garden by half. How do the areas of the original and revised
gardens compare?
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Chapter 8 Resource Book