Module 8.2 lesson 6 rotations of 180 degrees
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Transcript of Module 8.2 lesson 6 rotations of 180 degrees
Module 8.2 Lesson 6 Rotations of 180 degrees.notebook
1
May 10, 2016
HW
p 62-63 # 7, 9, 10
Module 8.2 Lesson 6
Rotations of 180 degrees
Do Now:The measure of a supplement of an angle is 390 more than half the angle. Find the angles.
Module 8.2 Lesson 6 Rotations of 180 degrees.notebook
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May 10, 2016
(4,3)
(4,3)
(x,y) (x,y)Rule:
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Module 8.2 Lesson 6 Rotations of 180 degrees.notebook
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May 10, 2016
Rules for Rotating 180 degrees(x,y) (x,y)
** Rotating a figure 180 degrees clockwise is the same as rotating a figure 180 degrees counter clockwise!!
Module 8.2 Lesson 6 Rotations of 180 degrees.notebook
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May 10, 2016
(x,y) (x,y)(2, 4) (2, 4)
**Start to rotate counter-clockwise
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Module 8.2 Lesson 6 Rotations of 180 degrees.notebook
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May 10, 2016
Page 56
(x,y) (x,y)(-3,5) --> (3,-5)
Module 8.2 Lesson 6 Rotations of 180 degrees.notebook
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May 10, 2016
PreImage Image
A (1, 2)B (4, 6)C (7, 1)
A' (1, 2)B' (4, 6)C' (7, 1)
A'
B'
C'
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Module 8.2 Lesson 6 Rotations of 180 degrees.notebook
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May 10, 2016
U (2, 4)
R (4, 8)
S (6, 4)O (4, 2)
U
R
O
S
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Module 8.2 Lesson 6 Rotations of 180 degrees.notebook
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May 10, 2016
U (2, 4)
R (4, 8)
S (6, 4)O (4, 2)
O'U
R
O
S
U (2, 4)
R (4, 8)
S (6, 4)O (4, 2)
S' U'
R'
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Module 8.2 Lesson 6 Rotations of 180 degrees.notebook
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May 10, 2016
11.the origin
A
B C
A' (4, 3)
B' (4, 6)
C' (7, 6)
A (4, 3)
B (4, 6)
C (7, 6)
A'
B'C'
Page 63
Module 8.2 Lesson 6 Rotations of 180 degrees.notebook
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May 10, 2016
Triangle ABC
A (1, 2)
B (1,7)
C (4,2)
Reflection over y = -x
A`
B`
C`
Module 8.2 Lesson 6 Rotations of 180 degrees.notebook
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May 10, 2016
Rules for Rotations90 degrees clockwise: (x,y) (y,-x)
90 degrees counter clockwise: (x,y) (-y,x)
180 degrees: (x,y) (-x,-y)