Dilations and Scale Factor

Front

What happens to a figure when the scale factor is less than one?

Back

The new figure will be a reduction.

Front

What is the scale factor?

Back

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

Front

What happens to a figure when the scale factor is greater than one?

Back

The new figure will be an enlargement.

Front

If the point (8, 12) is dilated to become point (2, 3), what is the scale factor?

Back

The scale factor is ¼.

Front

What is the scale factor from a small shape to a big shape if the scale factor is 2?

Back

The big shape is twice the size of the small shape.

Front

Define 'dilation' in geometry.

Back

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

Front

What is the relationship between the original figure and the dilated figure?

Back

The original figure and the dilated figure are similar.

Front

If a triangle has a scale factor of 3, how does its area change?

Back

The area of the triangle increases by a factor of 3², or 9.

Front

What is the scale factor if a shape is reduced to half its size?

Back

The scale factor is 1/2.

Front

How do you calculate the scale factor between two similar figures?

Back

Divide the length of a side of the new figure by the length of the corresponding side of the original figure.