Dilations Intro

Front

What is a dilation in geometry?

Back

A transformation that alters the size of a figure but not its shape.

Front

What does the scale factor (SF) indicate in a dilation?

Back

The ratio of the size of the image to the size of the original figure.

Front

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

Back

Enlargement.

Front

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

Back

Reduction.

Front

What is the center of dilation?

Back

The fixed point in a dilation from which all points are expanded or contracted.

Front

How does a dilation affect the angles of a figure?

Back

The angles remain the same in a dilation.

Front

What happens to the lengths of the sides of a figure during a dilation?

Back

The lengths are multiplied by the scale factor.

Front

Can a dilation produce a smaller figure?

Back

Yes, if the scale factor is less than 1, it produces a reduction.

Front

What is an example of a dilation with a scale factor of 2?

Back

If a triangle has sides of length 3, 4, and 5, after dilation with SF=2, the sides will be 6, 8, and 10.

Front

What is the difference between enlargement and reduction?

Back

Enlargement increases the size of a figure, while reduction decreases it.