Tuesday 2/11/2020

• Get out Transformations guided note packet• Get out Translations

packet• Have a pencil.

Agenda

Positives

Week At-A-Glance

Rotations - Ch.6 - L.3

IXL Lessons

P.9 P.10 P.11 P.12 P.13

Translation Notation Practice

•Move the figure 3 units left, 4 units up.

•Move the figure 6 units right, 2 units up.

•Move the figure 2 units left, 3 units down.

X 3,4 4

Xt 6,41 2

X 2 Y 3

ReflectionsPractice

• Algebraic rule when reflecting over the x-axis.

• Algebraic rule when reflecting over the y-axis.

X 4 x ly

Xy Xxii

II I

IVH not given rotation direction

rotate coyncterwglockwise

RotationsA rotation is a transformation that _______________ a

figure about a fixed point. The angle of rotation is

the number of degrees the figure rotates.

90○ Rotation (Clockwise)

A (1, 4) A’ ( , )

B (1, 1) B’ ( , )

C (4, 3) C’ ( , )

Algebraic Rule:

(x, y) → (y, -x)

180○ Rotation (Clockwise)

A (1, 4) A’ ( , )

B (1, 1) B’ ( , )

C (4, 3) C’ ( , )

Algebraic Rule :

(x, y) → (-x, -y)

A

B

C

A’B’

C’

A

B

C

A’

B’

C’

© the mrs. garen

turns

2700 Rotation CCW

4 I

l I

3 4

I multiply x by I

2 switch coordI

I 4I I

4 3

multiply X y by I

270○ Rotation (Clockwise)

A (1, 4) A’ ( , )

B (1, 1) B’ ( , )

C (4, 3) C’ ( , )

Algebraic Rule:

(x, y) → (-y, x)

360○ Rotation (Clockwise)

A (1, 4) A’ ( , )

B (1, 1) B’ ( , )

C (4, 3) C’ ( , )

Algebraic Rule :

(x, y) → (x, y)

A

B

C

A’ B’

C’

A

B

CA’

B’

C’

© the mrs. garen

90RotationCCW

4 I

I I

3 4

multiply Y by I

switch

I 4I I

4 3

stay the same

Pg 475

pg 477

2700CCW 1800CCW 900CCW

90 CW X y 7 Cy xDl 4 I 4444 D 4,4

E 2 1F 1,3

Pg 478

270 CCW 90 CWM

n

MY y x 900CWI opQ

M 2,5 M 5 2Q M

N 6 4 N 14 6

Pele 1 P'll 6 N

Ql2 1 Q 1 2

Homework • Pg. 479 #’s 1-5ITS

Pg. 479 #'s 1, 4, & 5 & Pg. 480 #'s 7 & 8