4.5 Review

Front

What is a dilation in geometry?

Back

A transformation that alters the size of a figure but maintains its shape.

Front

What happens when a dilation has a scale factor greater than one?

Back

The dilation results in an enlargement of the figure.

Front

What happens when a dilation has a scale factor less than one?

Back

The dilation results in a reduction of the figure.

Front

What is the scale factor in a dilation?

Back

The ratio of the size of the image to the size of the preimage.

Front

What is the formula for finding the scale factor (k)?

Back

Front

What does it mean for figures to be similar?

Back

Similar figures have the same shape but may differ in size.

Front

If a figure is dilated by a scale factor of -2, what happens to its orientation?

Back

The figure is enlarged and reflected across the center of dilation.

Front

What is the effect of a scale factor of 1 on a figure?

Back

The figure remains unchanged in size.

Front

How do you determine if a dilation is an enlargement or a reduction?

Back

If the scale factor is greater than 1, it's an enlargement; if less than 1, it's a reduction.

Front

What is the relationship between the original figure and its image after dilation?

Back

The image is a scaled version of the original figure, maintaining proportional dimensions.