Rotations Lesson
Fill each space with the   appropriate sign rule.      
 (0,+) (0,-) (-,0) (+,0)          (+,+)  (-,-) (+,-) (-,+)
(Do not use a space in     between the signs.)
Q1
Positive 
Y-axis
Negative
Y-axis
Positive x-axis
Negative 
X-axis
Q2
Q3
Q4
  90 
CCW
180
CCW
270 
CCW
Fill each box with either:
Pos x              Pos y
Neg x             Neg y
Q1                  Q2   
Q3                  Q4
Identify the resulting quadrant or axis after arotation around the origin with the givendegree of rotation.
Fill in the boxes with 
the ordered pair (no
spaces in between).
Notice that every 
90 degree rotation
swaps the X and Y
coordinates and 
takes the signs of
quadrant the point
falls in.
1) Every 90 degree turn swaps the X and Y values.
2) Every 90 degree turn moves a point into the next quadrant.
These two observations give you a two step method forrotating a point 90 degrees around the origin.
By now, you should have noticed two things.
Step 2:
Step 1:    Swap the X and Y values.
Rotate P (7,4)  around the origin 90 degrees CCW.
Identify the quadrant the image 
will end up in, and apply that quadrant's
sign rules to the point.
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