Translations
Reflections
Rotations
Dilations
Symmetry
100

Define a translation

To vertically and/or horizontally SLIDE a figure

100

Define a reflection

A FLIP over a line called the line of reflection

100
Define a rotation
A TURN around a fixed point called the center of rotation.
100

Define a Dilation

A dilation is an ENLARGEMENT or REDUCTION of a figure with respect to a fixed point called the CENTER of DILATION
100

What are the three types of Symmetry

line, point, and rotation

200

What is the notation for translations?

(x,y)->(x+h,y+k)

200

What kind of line does x=-3 look like?

A vertical line at (-3,0)

200

The rules of 90,180, and 270 CCW rotations are

90(-y,x), 180(-x,-y), 270(y,-x)
200

Dilations create _________ figures

Similar

200

What is the symmetry of the letter P

None
300

Describe the transformation (x,y)->(x-2,y)

Left 2 only

300

What is the rule for reflecting over the x-axis? (x,y)-> ( , )

(x,y)-> (x , -y)

300

What is A' if I rotate A(8,-3) 270 degrees CCW

A'(-3,-8)

300

What will happen to a figure if k=3/2

Enlargement

300

What is the symmetry of a smiley face 

Line

400

Translate the triangle ABC (x,y)->(x-3,y+2) if the points are A(2,1), B(4,4), C(3,-2)

A'(-1,3), B'(1,6), C'(0,0)

400

What is the line of reflection here: 

The y-axis

400

Identify the rotation: 

90 degrees CCW

400

What is X' if X(6,2) is dilated with k=1/2

X'(3,1)
400

If you have rotational symmetry, do you HAVE to also have point symmetry?

No, point has to be 180 degree rotational symmetry and rotational could be anything. 

500

Identify the translation:


(x,y)->(x+5,y+2)

500

Find A' if you reflect A(5,-7) over y=x

A'(-7,5)

500

What is the coordinate of B' is I rotate B(6,2) 270 degrees CLOCKWISE

(x,y)->(-y,x) 90 CCW, B'(-2,6)

500

Identify the dilation if C(5,7) and C'(7.5,10.5)

3/2 or 1.5

500

Define rotational symmetry

Rotating less than 360 degrees