Dilations: Writing the Rule

Front

What is a dilation in geometry?

Back

A dilation is a transformation that alters the size of a figure but not its shape, using a scale factor.

Front

What is the scale factor in a dilation?

Back

The scale factor is a number that describes how much a figure is enlarged or reduced during a dilation.

Front

If the scale factor is greater than 1, what type of transformation is it?

Back

It is an enlargement.

Front

If the scale factor is less than 1, what type of transformation is it?

Back

It is a reduction.

Front

Write the algebraic rule for a dilation with a scale factor of 2.

Back

(x, y) → (2x, 2y)