
Unit 1: Geometric Transformations Test Review
Presentation
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Mathematics
•
8th Grade
•
Practice Problem
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Hard
+1
Standards-aligned
Liza Mostek
Used 6+ times
FREE Resource
5 Slides • 13 Questions
1
Unit 1: Geometric Transformations Test Review
2
A type of transformation that keeps the congruence.
Rotations, Reflections and Translations
Rigid Transformation
An operation that maps an original figure (pre-image) onto a new figure (image).
Transformation
Key Vocabulary
3
Polygons with the same shape but different size.
Similar Figures
Polygons that have the same size and the same shape.
Congruent Figures
Key Vocabulary
4
A vertical or horizontal slide.
Translations
A flip over a line called the line of reflection.
Reflection
A turn around a fixed point called the center of rotation.
Rotation
Rigid Transformations
5
Dilation: An enlargement or reduction of a figure.
Scale Factor: Indicates how much the figure will enlarge/ reduce
Dilations
6
Multiple Choice
What is the rules for a 90 degree clockwise rotation.
(x, y)(-y, –x)
(x, y)(y, –x)
(x, y)(-y, x)
(x, y)(y, x)
7
Multiple Choice
What is the rules for a 270 degree clockwise rotation.
(x, y)(-y, –x)
(x, y)(-y, x)
(x, y)(y, –x)
(x, y)(y, x)
8
Multiple Choice
What is the rule for a translation 2 units left and 4 units up?
( x , y ) --> ( x - 2 , y + 4 )
( x , y ) --> ( x - 2 , y - 4 )
( x , y ) --> ( x + 2 , y + 4 )
( x , y ) --> ( x + 2 , y - 4 )
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Multiple Choice
Describe the transformation taking place.
Reflection across the x-axis.
Reflection across the y-axis.
Rotation 180 degrees.
Rotation 270 degrees counterclockwise
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Multiple Choice
What is the coordinate of point E after a rotation 180 degrees?
(2 , 6 )
( -2 , 6)
( 2 , - 6 )
( -2 , -6 )
11
Multiple Choice
What is the coordinate of point E after a reflection across the y-axis?
(2 , 6 )
( -2 , 6)
( 2 , - 6 )
( -2 , -6 )
12
Multiple Choice
What is the coordinate of point E after a translation ( x , y ) --> ( x -3 , y + 2 ) ?
(1 , 8 )
( -1 , 8)
( -1 , - 8 )
( 1 , -8 )
13
Multiple Choice
What is the coordinate of point E after a rotation 90 degrees clockwise.
(6 , 2 )
( -6 , 2)
( 6 , -2 )
( -6 . -2 )
14
Multiple Choice
What is the coordinate of point E after a dilation of a scale factor of 1/2?
(4 , 12 )
( 1 , 3)
( 6 , -2 )
( -6 . -2 )
15
Multiple Choice
What is the coordinate of point E after a dilation of a scale factor of 2?
(4 , 12 )
( 1 , 3)
( 6 , -2 )
( -6 . -2 )
16
Multiple Choice
What is the new coordinate of R' after a rotation 180 degrees and a translations 2 units right and three units down.
(7 , 1 )
( 3 , 7 )
( 6 , -2 )
( -6 . -2 )
17
Multiple Choice
What is the new coordinate of R' after a reflection across the y - axis and a dilation of a scale factor of 3.
(15 , 212 )
( 15 , -12)
( -15, 12 )
( -5 , 4 )
18
Multiple Choice
What is the new coordinate of R' after a rotation 90° counterclockwise around the origin and a translation 5 units down.
( 4 , -5 )
( -4 , 5 )
( 4 , -10 )
( -1 , 5 )
Unit 1: Geometric Transformations Test Review
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