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Geometry · Chapter 7 · Lesson 7.1 · Printable PDF

What a Dilation Does to a Line Worksheet with Answer Key

7 problems on what a dilation does to a line: images of lines, lines that are their own image, midpoints, finding an error in an image line, dilating a triangle, and parallel lines. 2 pages, with a worked answer key.

7 problems2 pagesanswer key
Printable What a dilation does to a line worksheet with answer key - Geometry (Page 1 PDF preview)
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Try one first: a free Chapter 1 worksheet (PDF, no sign-in).

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What's on the worksheet

  1. Find the image line, the scale factor or the original line for each dilation at the origin.
  2. Write the line with slope -2 that is its own image and find the image of another line.
  3. Find images of points and a midpoint, and compare lengths.
  4. Show Priya's image line is wrong using a point on the line.
  5. Dilate a triangle about vertex A and find which sides lie on lines that are their own image.
  6. Find distances from the center for images of three parallel lines.
  7. Explain why the images of two parallel lines are parallel.

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The free lesson teaches it with worked examples and practice problems.

What a dilation does to a line: the lesson ›

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