Chapter 4 review

Question 1

Translation:when an image is translated, it is “____” by a _____ <,>

Answer 1

Shifted
Vector
<a,b>

Question 2

Translation coordinate rule:
(X,y) —>

Answer 2

(x+a, y+b)

Question 3

Translation vector:
a:
b:

Answer 3

Left/right
Up/down

Question 4

Vector: to ___ something

Answer 4

Slide

Question 5

How many lines of symmetry does a star have?

Answer 5

5

Question 6

How many lines of symmetry does a heart have?

Answer 6

One

Question 7

How many lines of symmetry does a checkmark have?

Answer 7

0

Question 8

Reflection properties:
1. The reflection line is a _____ _____ between the 2 images. The images are ________ to the line of reflection.
2. A point reflected __ ___ _____ of reflection is the ___ ____ (when flipped)

Answer 8

1. Perpendicular bisector
   Equidistant
2. On the line
   Same point

Question 9

X - axis coordinate rule:

Answer 9

(x,-y)

Question 10

Y = x coordinate rule:

Answer 10

(y,x)

Question 11

Y - axis coordinate rule:

Answer 11

(-x,y)

Question 12

Y = -x coordinate rule:

Answer 12

(-y,-x)

Question 13

Two negative signs =

Answer 13

+ number

Question 14

90 coordinate rule:

Answer 14

(-y,x)

Question 15

270 coordinate rule:

Answer 15

(y,-x)

Question 16

Dilation coordination rule:

Answer 16

(kx,ky)

Question 17

Translation coordinate rule:

Answer 17

(x+a,y+b)

Question 18

Rotational symmetry steps:
1. Count the _____ “parts”
2. Divide 360 by the number of ______
3. ____ the numbers repeatedly before it goes over _____.

Answer 18

1. Vertices
2. Vertices
3. Add
   180

Question 19

Rotation properties:
1. If points and their images have been ____, then they are ______ to the center of rotation.
2. If a point rotated is on the ___ ___ ____ then it is the ____ point after the rotation.

Answer 19

1. Rotated
   Equidistant
2. Center of rotation
   Same

Question 20

Composition:
______ transformations in a _____.
A-> a’-> a”-> a”’

Answer 20

Multiple
Row

Question 21

Rigid motion: a _____ that contains _____.

Answer 21

Transformation
Congruence

Question 22

Rigid motion examples:

Answer 22

Reflection
Translation
Rotation

Question 23

Dilations definition: a _____ where a figure gets ____ or _____ from a center of ____. ( By a ____ ____, k)

Answer 23

Transformation
Bigger
Smaller
Dilation
Scale factor

Question 24

Scale factor:
- A scale factor, __ is a ratio of ____ sides.
- for enlarging: k<
_-1 ( ___ number on top)
- for reducing, -1 _ k _ 1 ( _____ number on top)

Answer 24

• K
  Corresponding
• <
  Big
• <
  Small

Question 25

Scale factor coordinate rule: (k_ x, k_y)

Answer 25

Times sign

Question 26

Describing compositions: similarly
Two figures are similar figures when they have the ____ shape but not necessarily the ____ size.

Answer 26

Same
Same

Question 27

Congruent figures:
Check if one figure can be _____ onto the other using transformations.

Answer 27

Mapped

Question 28

Reflection in the line x = y

Answer 28

(y,x) don’t change signs

Question 29

Dilation: this recipe makes 12 cookies. How do I make 58 cookies?

Answer 29

58/12 = 4.833

Question 30

X = 2 reflection on graph

Answer 30

Up down intersecting 2 on x axis

Question 31

Y= -1 reflection on graph

Answer 31

Left to right line intersecting -1 on y axis

Question 32

Reflection: in the line y = - x

Answer 32

Two lines that form an x and meet in middle of graph where axis’s meet

Question 33

Done