M8-Unit 7 Review (Dilations & Similar Figures)

Front

What happens to a shape when the scale factor of a dilation is less than one?

Back

The dilation is a reduction.

Front

Dilation changes a shape's __________?

Back

Size.

Front

What is the scale factor used to produce an image if the original shape is multiplied by 1.5?

Back

1.5.

Front

If triangle PQR is larger than triangle JKL after a dilation, what type of dilation is it?

Back

Enlargement, because the image is larger than the original figure.

Front

What is the missing side length if the options are 16, 12, 35, 15 and the correct answer is 15?

Back

15.

Front

Define dilation in geometry.

Back

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

Front

What is a scale factor in dilation?

Back

A scale factor is a number that scales, or multiplies, the dimensions of a shape.

Front

If a shape is dilated by a scale factor of 2, what happens to its dimensions?

Back

The dimensions of the shape are doubled.

Front

What is the effect of a scale factor greater than 1 on a shape?

Back

It results in an enlargement of the shape.

Front

What is the effect of a scale factor less than 1 on a shape?

Back

It results in a reduction of the shape.