Dilations

Front

What is a pre-image in the context of dilations?

Back

The pre-image is the original shape before the dilation occurs.

Front

What is the scale factor if a line segment of 12 units is dilated to 4 units?

Back

1/3

Front

True or False: A scale factor of 1/2 reduces a figure.

Back

True

Front

If the dilation produces a smaller figure, what is this called?

Back

Reduction

Front

What are the new coordinates of (2, 8) when dilated by a scale factor of 2?

Back

(4, 16)

Front

What is a dilation in geometry?

Back

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

Front

What happens to a figure when the scale factor is greater than 1?

Back

The figure is enlarged.

Front

What happens to a figure when the scale factor is less than 1?

Back

The figure is reduced.

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 3, how does its area change?

Back

The area increases by a factor of 3^2, or 9.