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Unit 2 Test Review

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    Dilations, Similarity, and Introducing Slope
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  • What is a dilation?
    A transformation that makes a figure either bigger or smaller than its original image.
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  • What is slope?
    A number you can calculate using any two points on the line by dividing the vertical distance by the horizontal distance.
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  • What do you call a fixed point on a plane that's the starting point from which distances are measured in dilation?
    Scale Factor
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  • What is it called when one figure can fit exactly over another figure after rigid transformations and dilations occur?
    Similar
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  • The two triangles are similar. What is the corresponding side of segment DF in triangle ABC??
    AC
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  • The two triangles are similar. What is the corresponding vertex of vertex C in triangle DEF???
    Vertex F
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  • The two triangles are similar. Which segment in triangle DEF will have a length of 2.4?
    Segment EF
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  • Which two points shares the same slope as (0, 5) and (2, 8) when written as an equation?
    (4, 11) and (6, 14)
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  • What is the center of dilation?
    (-1, 1)
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  • What is the scale factor?
    1/5
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  • True or False: Angle measurements always stay the same when dilating a figure
    True
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  • True or False: Dilations always increase the length of line segments
    False
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  • Triangle ABC was dilated around center P to create triangle A'B'C'. What is the scale factor?
    4
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