Free Printable Similar figures, scale, and review...

1.

check all of the choice that apply

similar figures must have which of the following features

a)

corresponding congruent angles

b)

corresponding congruent side lengths

c)

corresponding proportional side lengths

d)

they are always triangles

e)

none of these choices

2.

GEOM~RALB. What is the

m\angle A\ =

a)

56 degrees

b)

134 degrees

c)

90 degrees

d)

180 degrees

e)

none of these

3.

WATER ~SBOIL.
which angle = 30degrees?

a)

$m\angle S=30\degree$

b)

$m\angle B\ =\ 30\degree$

c)

$m\angle O\ =\ 30\degree$

d)

$m\angle I\ =\ 30\degree$

e)

$m\angle L=30\degree$

4.

GROW ~ ESIZ. which proportion will help you to solve for EZ?

a)

$\frac{9}{8}=\frac{3}{x}$

b)

$\frac{12}{8}=\frac{9}{x}$

c)

$\frac{3}{8}=\frac{9}{x}$

d)

$\frac{12}{8}=\frac{3}{x}$

e)

none of these

5.

Write a similarity statement for the two marked triangles

a)

$\Delta RST\sim\Delta UVW$

b)

$\Delta RST\sim\Delta VUW$

c)

$\Delta RST\sim\Delta VWU$

d)

$\Delta RST\sim\Delta WVU$

e)

$\Delta RST\sim\Delta WUV$

6.

what is the simplified scale factor (written as a fraction)

small/big

a)

$\frac{2}{5}$

b)

$\frac{5}{2}$

c)

$\frac{2}{3}$

d)

$\frac{3}{2}$

e)

none of these

7.

ABCD~EFGH, what's the value of x

a)

x = 16

b)

x = 49

c)

x = 82

d)

x = 90

e)

x = 100

8.

If the scale of a model airplane to the actual plane is 1in to 3ft. If the model has a length of 2.1 inches, what proportion can be used to solve for the length on the plane

a)

$\frac{1in}{3ft}=\ \frac{x}{2.1\ ft}$

b)

$\frac{1\ in}{3\ ft}=\ \frac{2.1\ in}{x\ ft}$

c)

$\frac{1\ in}{3\ ft}=\ \frac{x}{5.1}$

d)

none of these

9.

$\frac{6}{15}=\frac{16}{40}\$
two sets of corresponding sides have been written in ratios. Are the side lengths proportional?

a)

yes

b)

no

10.

solve the proportion, and find what x =

\frac{x+2}{x+3}=\frac{6}{5}

a)

x = -1

b)

x = 4

c)

x = 5

d)

x = -8

e)

x = 6

Similar figures, scale, and review...

Total questions: 10

Worksheet time: 7mins

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