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SOS Math 800: Unit 7- Translations
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Terms in this set (16)
image
a shape or object that has been transformed
pre-image
the original shape or object that is being transformed
reflection
a transformation in which a figure is "flipped" across a line to give a mirror image of the original figure
rotation
a change in a shape or object by turning it
transformation
a change made to a shape or object; a reflection (flip), translation (slide), or rotation (turn)
translation
a change in a shape or object by sliding it
Translations can be written using ordered-pair notation.
True
An object that is translated 5 units to the right would be written as y + 5.
False
The ordered pair ( x + 2, y - 3) indicates a translation which moves the pre-image _____.
two units right and three units down
The ordered pair ( x + 4, y + 6) was used to translate an object. To find the pre-image of the object, you would need to move _____.
four units left and six units down
A point on a pre-image is G(5, -2). If its image has coordinates G'(2, 1), what was the translation?
( x - 3, y + 3)
An object is translated by ( x - 2, y - 6). If one point in the pre-image has the coordinates (-3, 7), what would be the coordinates of its image?
(-5, 1)
An object is translated by ( x + 4, y - 2). If one point in the image has the coordinates (5, -3), what would be the coordinates of its pre-image?
(1, -1)
Describe how you would graph a figure that is translated by ( x - 4, y + 2).
You would shift the figure left four units (x-4) and up 2 units (y+2). The order does not matter
A quadrilateral labeled T'B'N'E' indicates a pre-image.
False
When an object is translated, its image is the same size as the pre-image.
True
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