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Congruence, Similarity, Right Triangles & Trig - 46%


Circles, Geometric Measurement & Geometric Properties with Equations - 38%


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What You Need To Know...

MAFS.912.G-SQR.1.1 - Know the properties of dilations given by a center and a scale factor. 

  • A dilation taking a line not passing through the center of the dilation to a parallel line and leaves a line passing through the center unchanged.
  • The dilation of a line segment is longer or shorter in the ratio given by the scale factor.
  1. The benchmark will be assessed using Equation Response, Multi-select, Graphic Response, Open Response, Selectable Text, or Simulation Response.
  2. Items may use line segments of a geometric figure.
  3. Items will give the center of dilation and the scale factor.
  4. Items may give the student a figure or its dilation, center, and scale and then ask the student to verify the properties of dilation.

Example One

Example Two

Write the coordinates of the vertices after a dilation with a scale factor of 5, centered at the origin.

SRT 1 1 ExSRT 2 5 EX2a

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Example Three

Example Four

Additional Examples

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Lines through Dilations
Draw Dilations
Scale Factor
Negative Scale Factor
Dilation Word Problems

Reference Sheet



Select sample problems taken from FLDVIPN teacher materials

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Angela Kerins - Orange Co.
Lisa Lasseter - St. Johns Co.
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