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8M: Geo QC (Reflections) learn vocabulary
Contribué par: Ms. Roldan
(Auteur original: Dilaura)
1. A reflection is a transformation that does not change the shape or size of a figure. Therefore, wesay the pre-image and image are ....
congruent
2. A commonly used word to describe reflections is:
 flip 
3. Tell whether the transformation appears to bea reflection. 
 No, not a reflection
4. Tell whether the transformation appears to bea reflection. 
 Yes, reflection 
5. Tell whether the transformation appears to bea reflection. 
 No, not a reflection
6. When a reflection is created, there are twoimages.  The image that is there to start is calledthe 
where as the figure that is drawn after thereflection is called the 
To make sure the second firgure is properlylabeled, tick marks are put after the points, like A'.  This is pronounced A 

Term NOT used:
pre-image
reflection line
?
image
prime
7. Reflecting a coordinate across the x axis results in:
(x,y) → _________
(x, -y)
?
8. Reflecting a coordinate across the y axis results in:
(x,y) → _________
(-x, y)
?
9. If the point (9, -2) is reflected across the
     y-axis, the image point will be ...
(-9, -2)
2
-2
4
-4
6
-6
2
-2
4
-4
6
-6
8
-8
10
-10
10. Find the coordinates       of A' after a reflection       across the y-axis.     
write all coordinates
in the form of (x,y)
with no spaces
(-2,1)
A
B
C
2
-2
4
-4
6
-6
2
-2
4
-4
6
-6
8
-8
10
-10
11. Find the coordinates       of B' after a reflection      across the x-axis.     
write all coordinates
in the form of (x,y)
with no spaces
(5,-1)
A
B
C
2
-2
4
-4
6
-6
2
-2
4
-4
6
-6
8
-8
10
-10
12. Find the coordinates of    A' after a reflection 
      across the x-axis.
D
A
C
B
write all coordinates
in the form of (x,y)
with no spaces
(-8,-4)
2
-2
4
-4
6
-6
2
-2
4
-4
6
-6
8
-8
10
-10
13. Find the coordinates of   B' after a reflection across      the y-axis.
D
A
C
B
write all coordinates
in the form of (x,y)
with no spaces
(3,4)
2
-2
4
-4
6
-6
2
-2
4
-4
6
-6
8
-8
10
-10
14. Find the coordinates of   B' after a reflection across     the x-axis.
A
B
C
write all coordinates
in the form of (x,y)
with no spaces
(-4,5)
2
-2
4
-4
6
-6
2
-2
4
-4
6
-6
8
-8
10
-10
15. Find the coordinates of    C' after a reflection over       the y-axis.
A
B
C
write all coordinates
in the form of (x,y)
with no spaces
(2,-1)
2
-2
4
-4
6
-6
2
-2
4
-4
6
-6
8
-8
10
-10
16. Find the coordinates of    C' after a reflection across       the y-axis.       
write all coordinates
in the form of (x,y)
with no spaces
(-5,5)
A
B
C
2
-2
4
-4
6
-6
2
-2
4
-4
6
-6
8
-8
10
-10
17. Find the coordinates of    B' after a reflection across      the x-axis.     
write all coordinates
in the form of (x,y)
with no spaces
(3,0)
A
B
C
2
-2
4
-4
6
-6
2
-2
4
-4
6
-6
8
-8
10
-10
18. Find the coordinates of    A' after a reflection across      the y-axis.
write all coordinates
in the form of (x,y)
with no spaces
C
B
(0,3)
A
2
-2
4
-4
6
-6
2
-2
4
-4
6
-6
8
-8
10
-10
19. Find the coordinates of   B' after a reflection across     the y-axis.
write all coordinates
in the form of (x,y)
with no spaces
C
(5,0)
B
A
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