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Transformations and Dilations

Transformations and Dilations

Assessment

Presentation

Mathematics

8th Grade

Medium

CCSS
8.G.A.3, HSG.CO.A.2, HSG.CO.A.5

Standards-aligned

Created by

Charles Neal

Used 51+ times

FREE Resource

6 Slides • 17 Questions

1

Transformations and Dilations

by Charles Neal

2

Multiple Choice

A type of transformation where a geometric figure slides horizontally, vertically, or both.

1

dilation

2

translation

3

rotation

4

reflection

3

Multiple Choice

A reflection ____________________.

1

turns a figure around a point.

2

slides an object form one place to another.

3

flips or mirrors an object across a line.

4

changes the size of an object.

4

Multiple Choice

A transformation that “turns” a figure about a fixed point is a _____________________.

1

rotation

2

translation

3

reflection

4

dilation

5

Multiple Choice

Translated figures are always __________________.

1

Congruent

2

Bigger

3

Smaller

4

Rotated

6

Multiple Choice

Question image

What type of transformation is this?

1

Rotation

2

Reflection

3

Translation

4

Enlargement

7

Multiple Choice

Question image
The image shows what type of transformation
1
Rotation
2
Translation
3
Reflection

8

Multiple Choice

Question image

If the dotted figure is the image, the original figure was reflected over the ...

1

x-axis

2

y-axis

3

rotation 180

4

translation 4 left

9

Multiple Choice

Question image
Describe the transformation shown in the graph.
1
Reflect over x-axis
2
Reflect over y-axis
3
Rotate 270 degrees CCW
4
Rotate 90 degress CCW

10

Multiple Choice

Question image
Write a rule for the translation.
1
 (x -1, y  + 2)
2
 (x -2, y  + 1)
3
 (x +2, y  - 1)
4
(x +1, y  -  2)

11

12

Multiple Choice

A dilation is which of the following: 
1
only an enlargement
2
only a reduction
3
Either an enlargement or a reduction
4
Neither an enlargement or a reduction

13

media

14

media

15

Multiple Choice

A dilation produces a similar figure
1
True
2
False

16

Multiple Choice

A dilation produces a congruent figure

1

True

2

False

17

Multiple Choice

When a dilation has a scale factor greater than one, the dilation is an enlargement.
1
True
2
False

18

Multiple Choice

When the scale factor of a dilation is less than one, the dilation is a reduction.
1
True
2
False

19

Multiple Choice

Question image
Choose the correct scale factor:
1
2
2
3
3
1/3
4
1/2

20

Multiple Choice

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.

1

B' (2 , 4.5)

2

B' (-8 ,-18)

3

B' (8 ,18)

4

B' (9 ,4)

21

Multiple Choice

Dilate the figure by a scale factor of 3 with the origin as the center of dilation. What are the coordinates of the image?

A(3,3) B(6,6) C(9,3)

1

A'(9,9) B'(18,18) C'(27,9)

2

A'(6,6) B'(9,9) C'(12,6)

3

A'(0,0) B'(3,3) C'(6,0)

4

A'(1,1) B'(2,2) C'(3,1)

22

​Lesson Summary

​Translations move each point the same distance and same direction.

Rotations move each point the around a center point the same amount of degrees.

​Reflections move each point the same distance across a line of reflection.

​Dilations enlarge or shrink a shape by the same scale factor.

23

​Practice IXL 8th Grade

​R.4: Identify Reflections, Rotations, and Translation

R.7: Translations - Find the Coordinates

​R.12: Reflections - Find the Coordinates

​R.14: Rotations - Find the Coordinates

​​

S.3: Dilations - Find the Coordinates

Transformations and Dilations

by Charles Neal

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