Quiz about Scale Factor, Dilation and Similarity Review

Question 1

Two objects that are the same shape but not the same size are _______.

Accepted Answer

Similar

Answer

Congruent

Answer

Vertical

Answer

Complementary

Question 2

If the scale factor is greater than one, the new figure will be

Accepted Answer

an enlargement

Answer

a reduction

Answer

a scale

Answer

not proportional

Question 3

Choose the correct scale factor:

Accepted Answer

2

Answer

3

Answer

1/3

Answer

1/2

Question 4

A dilation is which of the following:

Accepted Answer

Either an enlargement or a reduction

Answer

only an enlargement

Answer

only a reduction

Answer

Neither an enlargement or a reduction

Question 5

A dilation produces a congruent figure

Accepted Answer

False

Answer

True

Question 6

When a dilation has a scale factor greater than one, the dilation is an enlargement.

Accepted Answer

True

Answer

False

Question 7

When the scale factor of a dilation is less than one, the dilation is a reduction.

Accepted Answer

True

Answer

False

Question 8

In a dilation what mathematical operation is used with the scale factor?

Accepted Answer

multiplication

Answer

addition

Answer

subtraction

Answer

division

Question 9

The __________ is the ratio of a length of the new figure to the corresponding length on the original figure.

Accepted Answer

scale factor

Answer

reduction

Answer

enlargement

Answer

center of dilation

Question 10

Similar figures have the same ______ but different ______.

Accepted Answer

shape; sizes

Answer

measure; shapes

Answer

sizes; shapes

Answer

value; measures

Question 11

What is the scale factor from ABCD to MNOP?

Accepted Answer

2/3

Answer

3/2

Answer

2

Answer

3

Question 12

If your SF = 0.8, what type of dilation is it?

Accepted Answer

Reduction

Answer

Enlargement

Question 13

If your SF = 2.5, what type of dilation is it?

Accepted Answer

Enlargement

Answer

Reduction

Question 14

If your SF = 6/5, what type of dilation is it?

Accepted Answer

Enlargement

Answer

Reduction

Question 15

If your SF = 7/7, what happens to the figure when dilated?

Accepted Answer

preserve

Answer

reduced

Answer

enlarge

Answer

It turns into an octopus

Question 16

What is the scale factor in the algebraic representation
(x,y) to (2x,2y)

Accepted Answer

k=2

Answer

k=1/2

Answer

k=2.2

Answer

k=0.5

Question 17

What variable represents scale factor in the algebraic representation (x,y) to (kx,ky)?

Accepted Answer

k

Answer

x

Answer

y

Answer

z

Question 18

What is the scale factor from the small shape to the big shape?

Accepted Answer

2

Answer

1/2

Answer

7/3

Answer

10/3

Question 19

Sides that are in the same position are called

Accepted Answer

Corresponding Sides

Answer

Corresponding Angles

Answer

The Same

Answer

Congruent Sides

Question 20

Which is an example of a reduction?

Accepted Answer

k = 1/2

Answer

k = 1

Answer

3:2

Answer

250%

Question 21

Which is an example of an enlargement?

Accepted Answer

2.5

Answer

k = 1/2

Answer

k = 1

Answer

2:3

Question 22

What is the definition of dilations in mathematical terms?

Accepted Answer

to make larger or smaller

Answer

to make larger

Answer

none of the above

Answer

to make smaller

Question 23

A dilation produces a similar figure

Accepted Answer

True

Answer

False

Question 24

A dilation produces a congruent figure

Accepted Answer

False

Answer

True

Answer

D

Question 25

All angles in similar figures are congruent.

Accepted Answer

True

Answer

False

Question 26

Tell whether the two figures are similar. Explain your reasoning. (Hint: are they proportional?)

Accepted Answer

No, not similar because they are the same shape, but side lengths are not proportional.

Answer

Yes, similar because they are the same shape and side lengths are proportional.

Answer

Yes, same shape

Answer

No, different sizes

Question 27

Angles in the same position are called

Accepted Answer

Corresponding Angles

Answer

Corresponding Sides

Answer

The Same

Answer

Congruent Angles

Question 28

What is the scale factor?

Accepted Answer

4

Answer

.25

Answer

5

Answer

6

Question 29

Which of the following is a scaled copy of figure A?

Accepted Answer

D

Answer

B

Answer

C

Question 30

Line CB corresponds with what line?

Accepted Answer

RQ

Answer

SR

Answer

PQ

Answer

SP

Question 31

Is Figure B a scaled copy of Figure A?

Accepted Answer

Yes

Answer

No

Question 32

What is the scale factor from the small fry to the large fry?

Accepted Answer

3

Answer

1/3

Answer

48

Answer

4

Question 33

Are the following similar? Why or why not?

Accepted Answer

No, the ratios of the corresponding sides are not equal.

Answer

Yes

Answer

No, the corresponding angles are not equal.

Question 34

Which of the following are scaled copies of the original portrait? Select ALL the apply.

Accepted Answer

C

Accepted Answer

D

Answer

A

Answer

B

Answer

E

Question 35

Name the transformation.

Accepted Answer

Reflection

Answer

Translation

Answer

Rotation

Question 36

The image shows what type of transformation

Accepted Answer

Reflection

Answer

Rotation

Answer

Translation

Question 37

What is this picture an example of?

Accepted Answer

Rotation

Answer

An angle

Answer

A cat vertex

Question 38

What transformation is happening to the red triangle to get to the blue triangle?

Accepted Answer

Translation

Answer

Rotation

Answer

Reflection

Question 39

Describe the Transformation

Accepted Answer

Rotation

Answer

Translation

Answer

Reflection

Question 40

Describe the Transformation

Accepted Answer

Translation

Answer

Rotation

Answer

Reflection

Question 41

The image shows what type of transformation

Accepted Answer

Reflection across the x axis

Answer

Rotation

Answer

Translation

Answer

Reflection across the y axis

Question 42

Identify the transformation from ABC to A'B'C'.

Accepted Answer

Reflection across the y-axis

Answer

Reflection across the x-axis

Answer

90^o clockwise rotation

Answer

90^o counterclockwise rotation

Question 43

Which of the following describes the sequence of transformations shown?

Accepted Answer

Translate up and then rotate 90 degrees about the origin.

Answer

Reflect across the x-axis and then rotate -90 degrees around the origin

Answer

Rotate -90 degrees around the origin and then translate down.

Answer

Reflect across the x-axis and then reflect across the y-axis.

Question 44

Which transformations keep figures congruent?

Accepted Answer

translation, reflection, and rotation

Answer

translation, reflection, and dilation

Answer

reflection, rotation, and dilation

Answer

dilation, translation, reflection, and rotation

Question 45

Which scale factor shrinks a figure?

Accepted Answer

k= 1/3

Answer

k = 0

Answer

k =2

Answer

k = 1

Question 46

Name the series of transformations that maps ABC onto DEF

Accepted Answer

reflect over x then translate left 6 up 1

Answer

reflect over y then translate down 6 left 1

Answer

translate right 6 down 1, then reflect over x

Answer

rotate 90 clockwise then reflect over y

Scale Factor, Dilation and Similarity Review

50 questions

Two objects that are the same shape but not the same size are _______.

If the scale factor is greater than one, the new figure will be

Choose the correct scale factor:

The point A (8, 12) was dilated to become point A' (2, 3). What was the scale factor?

A dilation is which of the following:

A dilation produces a congruent figure

When a dilation has a scale factor greater than one, the dilation is an enlargement.

When the scale factor of a dilation is less than one, the dilation is a reduction.

In a dilation what mathematical operation is used with the scale factor?

The __________ is the ratio of a length of the new figure to the corresponding length on the original figure.

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