2.2 – perform reflections
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2.2 – Perform Reflections. Reflection:. Flips a shape over a given line. perpendicular. bisecting. - PowerPoint PPT PresentationTRANSCRIPT
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2.2 – Perform Reflections
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Reflection:Flips a shape over a given line
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'A'B
'C
perpendicular
bisecting
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1. When the shapes below are reflected across the given line of reflection, the original shape and the image (reflection) create a new shape. For each reflection below, name the new shape that is created.
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P
'P
P'P P 'P
P
'P
P
'P
2.
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3. Graph the reflection of the polygon in the given line.
a. x – axis
'C'A
'B
1, −2( )
4, −4( )
3, −1( )
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b. y – axis
'C
'A
'B
'D
A'_______
B '_______
C '_______
D'_______
4, −1( )
4, −4( )
2, −4( )
2, −1( )
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'C
'A
'B
c. y = x
−3,−1( )
−4,2( )
0,3( )
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4. Graph the reflection of the polygon in the given line. Label all new points with primes.
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a. x = 1
'C'A
'B
5,3( )
5,0( )
2,2( )
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b. x – axis
'C
'A
'B
'D
A'_______
B '_______
C '_______
D'_______
−4,−2( )
−2,2( )
1,1( )
−2,−2( )
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c. y = -1
'C
A'
'B
D'
A'_______
B '_______
C '_______
D'_______
−2,−3( )
−4,−1( )
2, −1( )
0, −4( )
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5. Determine the line of reflection for the given shapes below.
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a.
y =−4
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b.
x =1
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c.
y =−x
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6. Reflect the object across the y-axis, and then reflect the new image across the x-axis. Use double prime marks for the last image.
'C'A
'B
C '' A''
B ''