7.MG.4 – Dilations - Study Guide
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Flashcards based on dilations and scale factors.
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8 Terms
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Dilation
A size transformation that produces a similar figure. Angles have the same measure, and sides are similar.
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Scale Factor
The factor by which each pre-image point is multiplied to get the image points in a dilation.
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Pre-image
The original figure before a dilation.
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Image
The new figure after a dilation.
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A′ (A prime)
Symbol used to denote the vertices of the image after a transformation such as dilation.
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Scale factor greater than 1
The figure gets larger.
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Scale factor less than 1
The figure gets smaller.
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Scale factor of 1
The figure stays the same size.
Note 
Flashcards (45)