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Geometry AC Reflections (1/5)
Contributed by: Han
(Original author: Childress)
All transformations in this test are Reflections
What is a reflection?
REFLECTIONS
flip, mirror 
cartwheel
chinup
2
-2
4
-4
6
-6
2
-2
4
-4
6
-6
8
-8
10
-10
Names of lines
The y-axis
x=
The x-axis
y=
2
-2
4
-4
6
-6
2
-2
4
-4
6
-6
8
-8
10
-10
All horizontal lines are         y= number
Names of lines
y=
y= -4
y=0
2
-2
4
-4
6
-6
2
-2
4
-4
6
-6
8
-8
10
-10
x= -7
All vertical lines 
are x= number
x=0
Names of lines
x=
x=9
2
-2
4
-4
6
-6
2
-2
4
-4
6
-6
8
-8
10
-10
REFLECT the Points
over the y-axis  x=0
same distance from mirror
3
3
B'
image location
B
(
,
)
2
-2
4
-4
6
-6
2
-2
4
-4
6
-6
8
-8
10
-10
Translate  the point(s)
Reflect over x-axis
y=0
B
2
2
B'
image location
(
,
)
2
-2
4
-4
6
-6
2
-2
4
-4
6
-6
8
-8
10
-10
Reflect over x-axis
B
3
3
B'
image location
(
,
)
2
-2
4
-4
6
-6
2
-2
4
-4
6
-6
8
-8
10
-10
Reflect over y-axis
B
4
B'
4
image location
(
,
)
2
-2
4
-4
6
-6
2
-2
4
-4
6
-6
8
-8
10
-10
Reflect over y= -4
B
B'
image location
(
,
)
2
-2
4
-4
6
-6
2
-2
4
-4
6
-6
8
-8
10
-10
Reflect over x=1
B
B'
image location
(
,
)
2
-2
4
-4
6
-6
2
-2
4
-4
6
-6
8
-8
10
-10
Reflect over y=1
B'
B
image location
(
,
)
2
-2
4
-4
6
-6
2
-2
4
-4
6
-6
8
-8
10
-10
Reflect over y=0
B
B'
image location
(
,
)
2
-2
4
-4
6
-6
2
-2
4
-4
6
-6
8
-8
10
-10
Reflect over x=  6
B'
image location
(
B
,
)
2
-2
4
-4
6
-6
2
-2
4
-4
6
-6
8
-8
10
-10
A'
Reflect over x= -1
(
B'
,
A
)
B'
A'
B
B
image location
(
,
)
2
-2
4
-4
6
-6
2
-2
4
-4
6
-6
8
-8
10
-10
Reflect over y-axis
A'
(
B
,
)
B'
image location
(
A
,
)
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Geometry HN - Reflections (1/5)
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