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Vocab
Reflections
Translations
Rotations
Symmetry
100

Magnitude?

the length of a vector from the initial point, the terminal point.

100

How do you reflect over the x-axis?

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

100

How do you translate over the vector (a,b)?

(x+a, y+b)

100

How do you rotate 90 degrees CCW/270 degrees CW?

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

100

How can you find magnitude?

MAG= 360 degrees/ order

200
Isometry?
Transformation that preserves size and shape.
200

How do you reflect over the y-axis?

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

200

what is (a,b)?

a= height

b= vertical

200

How do you rotate 180 degrees?

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

200

What are some things with rotational symmetry?


List 2

Fans, starfish, etc

300

Tesselation?

Repeating pattern of 1 or more figures that cover a plane with no gaps or overlaps.

300

a-How do you reflect over line y=x?

b-How do you reflect over line y=-x?

a-(x,y)- (y,x)

b- (x.y)- (-y,-x)

300

examples-

Height=10

Vertical= 2

point (7,-4)

answer- 

(7+4, 2=(-4))=

(11,-2)

300

How do you rotate 90 degrees CW/ 270 degrees CW?

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

300

What are some things in the classroom with line symmetry?


List 3

white board, desk, book, etc

400

Symmetry?

A figure has this if there exists a rigid motion that maps out the figure.


( reflection, translation, rotation, or glide reflection)

 

400

Examples- 

1- (-5,7) reflected over the x- axis?

2- (7,16) reflected over the y- axis?

1- (-5,-7)

2-(-7, 16)

400

example-

Height=2

Vertical=8

Point=(3,6)

answer-

(3+2, 6+8)


=(5, 14)

400

example-


a-Rotate point (4,7) 90 degrees CCW

b-Rotate point (5,2) 90 degrees CW

answer

a-(-7,4)

b- (2,-5)

400
What are some things with point symmetry? 


List 4

Letter o, n, and z

butterfly

triangle

hour glass

500
Order?
Number of times rotated to get 360 degrees.
500

Example- 

(-9,4) reflected over line y=x

(4,-9)

500

Example- 

Point A- (2,4)

Point B- (7,3)

Point C-(5,5)

Height= 2    Vertical= 3

answer

Point A- (4,7)

Point B- (9,6)

Point C- (7,8)















































































500

example

a-rotate ( 6,3) 180 degrees

b- rotate ( -2,-3) 180 degrees

a- (-6,-3)

b- (2,3)

500

What is the order and magnitude of a 6 point star?

order-6

MAG- 360/6= 60 degrees