Free Printable Dilations Practice Quizizz

1.

A dilation is which of the following:

a)

only an enlargement

b)

only a reduction

c)

Either an enlargement or a reduction

d)

Neither an enlargement or a reduction

2.

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

a)

½

b)

¼

c)

4

d)

2

3.

Choose the correct scale factor:

a)

2

b)

3

c)

1/3

d)

1/2

4.

State the coordinate of the image of the given point B (4,9) under a dilation with center at the origin with the given scale factor of 2.

a)

B' (2 , 4.5)

b)

B' (-8 ,-18)

c)

B' (8 ,18)

d)

B' (9 ,4)

5.

A dilation produces a congruent figure

a)

True

b)

False

6.

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

a)

True

b)

False

7.

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

a)

True

b)

False

8.

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

a)

addition

b)

subtraction

c)

multiplication

d)

division

9.

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

a)

reduction

b)

enlargement

c)

scale factor

d)

center of dilation

10.

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

a)

Reduction

b)

Enlargement

11.

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

a)

Reduction

b)

Enlargement

12.

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

a)

Reduction

b)

Enlargement

13.

Dilate Point B by a scale factor of 3:

a)

(12,0)

b)

(12,12)

c)

(4,3)

d)

(0,12)

14.

Triangle ABC will be dilated by a scale factor of 1/2. What will be the coordinates of C'?

a)

(-1, -2.5)

b)

(12, 6)

c)

(3, -1.5)

d)

(0, 1.5)

15.

Rectangle ABCD is dilated so that A' is located at (3, 6). What could be the dilation rule?

a)

(2x, 3y)

b)

(2/3 x, 2/3 y)

c)

(3/2 x, 3/2 y)

d)

(x + 2, y + 3)

16.

Rectangle ABCD is dilated so that the coordinates of C' are (2, -1). What could be the dilation rule?

a)

(-2x, +1y)

b)

(1/2 x, 1/2 y)

c)

(2x, 2y)

d)

(x - 2, y - 1)

17.

Triangle ABC is dilated so that the coordinates of C' are (2, -1). What was the scale factor of the dilation?

a)

3

b)

2

c)

1/2

d)

1/3

18.

Which algebraic expression could be the rule for a reduction?

a)

(x, y)→(2x, 2y)

b)

(x, y)→(5/2 x, 5/2 y)

c)

(x, y) →(0.5x, 0.5y)

d)

(x, y)→(5x, 5y)

19.

Dilation rules use ______________ to change the ___________ of a shape.

a)

addition; location

b)

division; direction

c)

subtraction; orientation

d)

multiplication; size

20.

Tell whether the transformation is a dilation. Explain.

a)

No, scale factor isn't the same.

b)

Yes, scale factor is the same.

21.

The red triangle has been dilated by a scale factor of 1/4, which triangle is it's new image?

a)

green triangle

b)

red triangle

c)

black triangle

d)

none of these

22.

A dilation does which of the following? Choose all that apply.

a)

Can make an enlargement.

b)

Can make a reduction.

c)

Always makes a similar figure.

d)

Always makes a congruent figure.

e)

Uses a scale factor.

23.

ABC ~ XYZ. What is the scale factor of the dilation of ABC to XYZ?

a)

$\frac{2}{3}$

b)

$\frac{3}{2}$

c)

2

d)

3

24.

Choose the correct scale factor:

a)

2.5

b)

1.5

c)

3.5

d)

4

25.

Point M (8, 12) was dilated to become Point M' (2, 3). What was the scale factor?

a)

½

b)

¼

c)

4

d)

2

26.

Which of the following rules could NOT be used to represent a dilation with a scale factor of 1/4?

a)

(x, y) $\rightarrow$ $\left(\frac{1}{4}x,\ \frac{1}{4}y\right)$

b)

(x, y) $\rightarrow$ (4x, 4y)

c)

(x, y) $\rightarrow$ (0.25x, 0.25y)

d)

(x, y) $\rightarrow\ \left(\frac{x}{4},\ \frac{y}{4}\right)$

27.

$\Delta ABC$ was dilated to form $\Delta A'B'C'.$ Which statement below is true about the angles of $\Delta A'B'C'?$

a)

The angles of $\Delta A'B'C'$ are 1/2 the angles of $\Delta ABC.$

b)

The angles of $\Delta A'B'C'$ are 1/4 the angles of $\Delta ABC.$

c)

The angles of $\Delta A'B'C'$ $\cong$ to the angles of $\Delta ABC.$

d)

The angles of $\Delta A'B'C'$ are twice the size of the angles of $\Delta ABC.$

28.

$\Delta ABC$ was dilated to form $\Delta A'B'C'.$ Which statement below is true about the SIDES of $\Delta A'B'C'?$

a)

The sides of $\Delta A'B'C'$ are 1/2 the sides of $\Delta ABC.$

b)

The sides of $\Delta A'B'C'$ are 1/4 the sides of $\Delta ABC.$

c)

The sides of $\Delta A'B'C'$ $\cong$ to the sides of $\Delta ABC.$

d)

The sides of $\Delta A'B'C'$ are twice the size of the sides of $\Delta ABC.$

29.

Which of the following best explains why $Δ A B C a n d Δ A^{'} B^{'} C^{'}$ are similar?

a)

Sides AB and A'B' are congruent.

b)

Corresponding sides are congruent.

c)

The measure of angles of $\Delta ABC$ are half the measure of corresponding angles on $\Delta A'B'C'.$

d)

Corresponding sides are proportional.

30.

A figure is transformed based on the representation below.
$\left(x,\ y\right)\rightarrow\left(2.6x,\ 2.6y\right)$
Which statement best describes the resulting image?

a)

The figure was translated 2.6 units to the right and 2.6 units up.

b)

The sides of the image were reduced by a scale factor of 2.6.

c)

The sides of the image were enlarged by a scale factor of 2.6.

d)

The image is a reflection of the original.

Dilations Practice Quizizz

Total questions: 30

Worksheet time: 1hrs 2mins

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