Geo 3.4 Rotations
A commonly used word for a rotation is...
 flip
 slide
 turn
 push
Tell whether the transformation appears to 
be a rotation.
No, this is not a rotation
Yes, this is a rotation
Tell whether the transformation appears to 
be a rotation.
No, this is not a rotation
Yes, this is a rotation
Tell whether the transformation appears to 
be a rotation.
No, this is not a rotation
Yes, this is a rotation
Rotating the point (x,y) 90about the origin
results in the point...
(x, y)
(-x, y) 
(y, -x)
(-y, x)
Rotating the point (x,y) 180about the originresults in the point...
(x, y)
(-x, -y) 
(y, -x)
(-y, x)
Find the image coordinate of A' after a R90 about
the origin.
C
B
A
A' = 
note: write coordinates
as (x,y) with NO spaces
Find the image coordinate of B' after a R90 aboutthe origin.
C
B
A
B' = 
note: write coordinates
as (x,y) with NO spaces
Find the image coordinate of C' after a R90 aboutthe origin.
B
C' = 
note: write coordinates
as (x,y) with NO spaces
A
C
Find the image coordinate of C' after a R180 aboutthe origin.
B
C' = 
note: write coordinates
as (x,y) with NO spaces
A
C
Find the image coordinate of C' after a R180 aboutthe origin.
B
A
C
C' = 
note: write coordinates
as (x,y) with NO spaces
Find the image coordinate of A' after a R180 aboutthe origin.
B
A
C
A' = 
note: write coordinates
as (x,y) with NO spaces
Find the image coordinate of A' after a R90 aboutthe origin.
B
A
C
A' = 
note: write coordinates
as (x,y) with NO spaces
Find the image coordinate of C' after a R180 aboutthe origin.
D
A
C' = 
note: write coordinates
as (x,y) with NO spaces
B
C
Find the image coordinate of A' after a R180 aboutthe origin.
D
A
A' = 
note: write coordinates
as (x,y) with NO spaces
B
C
Find the image coordinate of D' after a R90 aboutthe origin.
D
A
D' = 
note: write coordinates
as (x,y) with NO spaces
B
C
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