Dilation and Similar Figures

If one side length of a shape is 8.4 cm and the corresponding side length of its dilation is 23.1 cm, the scale factor is 4/11

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The scale factor, k, of a dilation can be determined by writing a ratio comparing the length of a side of the image to the length of the corresponding side of the pre image.

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A shape and it's dilation are similar figures.

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• False

The corresponding angles of a shape and its dilation will have the same measures.

• True
• False

Parallelogram ABCD is similar to parallelogram EFGH. Which proportion must be true?

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Triangle CBA is similar to triangle EFD. Which three proportions must true?

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Quadrilateral ABCD is similar to quadrilateral MNOP. Which of the following proportions is not true about the two figures?

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Quadrilateral ABCD is similar to quadrilateral EFGH. Which proportion must be true?

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A rectangle will be dilated on a coordinate grid to create a smaller rectangle. The rectangle is dilated using the origin as the center of dilation. Which two rules could represent this dilation?