tuesday 2/11/2020 · tuesday 2/11/2020 •get out transformations guided note packet •get out...
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Tuesday 2/11/2020
• Get out Transformations guided note packet• Get out Translations
packet• Have a pencil.
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Agenda
Positives
Week At-A-Glance
Rotations - Ch.6 - L.3
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IXL Lessons
P.9 P.10 P.11 P.12 P.13
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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
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ReflectionsPractice
• Algebraic rule when reflecting over the x-axis.
• Algebraic rule when reflecting over the y-axis.
X 4 x ly
Xy Xxii
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II I
IVH not given rotation direction
rotate coyncterwglockwise
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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
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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
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Pg 475
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pg 477
2700CCW 1800CCW 900CCW
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90 CW X y 7 Cy xDl 4 I 4444 D 4,4
E 2 1F 1,3
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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
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Homework • Pg. 479 #’s 1-5ITS
Pg. 479 #'s 1, 4, & 5 & Pg. 480 #'s 7 & 8