Google Classroom
GeoGebraGeoGebra Classroom
GeoGebra

Dilations Exploration

Author:jensbet, Lance Bledsoe
Topic:Dilation

When the image A'B'C'D' is larger than the original figure ABCD (the preimage), the dilation is called an enlargement. What is the scale factor for enlargements?

Select all that apply
  • A
  • B
  • C
  • D
Check my answer (3)

When the image A'B'C'D' is smaller than the original figure ABCD (the preimage), the dilation is called a reduction. What is the scale factor for reductions?

Select all that apply
  • A
  • B
  • C
  • D
Check my answer (3)

What is the center of dilation on this graph?

Check my answer

Set the scale factor to 2. The ordered pairs of the preimage are A (2, 2), B (6, 2), C (5, 4), and D (3, 4). What are the ordered pairs of the image A'B'C'D'? How are those ordered pairs related to the scale factor?

Check my answer

Now set the scale factor to 0.5. How are the coordinates of the ordered pairs of the image A'B'C'D' related to the original points this time?

Check my answer
Note: Using the scale factor in this way to find the coordinates of image points works when the center of dilation is the origin (0, 0).

Is a dilation an isometry?

Select all that apply
  • A
  • B
Check my answer (3)

With dilations, are the image and preimage similar figures?

Select all that apply
  • A
  • B
Check my answer (3)

New Resources

Discover Resources

Discover Topics