Intro to Scale Factor Dilations

Front

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

Back

The figure undergoes a reduction.

Front

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

Back

The figure undergoes an enlargement.

Front

What is a smaller figure produced by a dilation called?

Back

A reduction.

Front

If Triangle DOG has coordinates D (0,0), O (0,4), and G (1,5), where is O' after a dilation of scale factor 7?

Back

O' is at (0,28).

Front

True or False: A dilation creates a similar figure.

Back

True.

Front

What is the definition of scale factor?

Back

The scale factor is a number that scales, or multiplies, a quantity.

Front

What is the center of dilation?

Back

The center of dilation is a fixed point in the plane about which all points are expanded or contracted.

Front

If a figure is dilated by a scale factor of 1, what happens to the figure?

Back

The figure remains unchanged.

Front

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

Back

The original figure and the dilated figure are similar.

Front

How do you calculate the coordinates of a dilated point?

Back

Multiply each coordinate of the original point by the scale factor.