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Scale Factor Baby Pic

Author:Judith Hilinski, ericmgreen, Anna Wells
[b][color=#ff0000][size=150]When two similar figures (pre-image and image) have a scale factor of 1, they are congruent (same size, same shape). [/size][/color][/b]
When two similar figures (pre-image and image) have a scale factor of 1, they are congruent (same size, same shape).
[b][size=150][color=#ff0000]When two similar (same shape, different size) figures have a scale factor greater than 1, resulting image is larger than the preimage. (Notice that the measurements of the image are divided by the measurements of the pre-image.) [/color][/size][/b]
When two similar (same shape, different size) figures have a scale factor greater than 1, resulting image is larger than the preimage. (Notice that the measurements of the image are divided by the measurements of the pre-image.)
[size=150][b][color=#ff0000]When two similar figures have a scale factor less than 1, but greater than 0, the resulting image will be smaller than the pre-image. [/color][/b][/size]
When two similar figures have a scale factor less than 1, but greater than 0, the resulting image will be smaller than the pre-image.

When the scale factor is 1.0, what are the length x width measurements of the photo?

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Is the image the same, smaller than, or larger than the pre-image?

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  • A
  • B
  • C
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What are the length x width measurements of the photo after applying a scale factor of 6?

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Is the image the same, smaller than, or larger than the preimage?

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  • A
  • B
  • C
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You work at a print shop. The client wants the original (pre-image) photo to be poster sized (60 x 80). What scale factor will you use?

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Now try a scale factor that is less than 1 but greater than 0. What are the l x w measurements of the photo after a scale factor of .5 is applied?

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Will the resulting image be larger, smaller or the same as the original photo?

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  • A
  • B
  • C
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What is the scale factor when the length x width of the photo is 6 x 8?

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  • A
  • B
  • C
  • D
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[size=200][b][color=#ff0000]Summary[/color][/b][/size]
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