Dilations Practice

Front

What mathematical operation is always used with the scale factor when dilating?

Back

Multiplication

Front

How do you find the scale factor?

Back

Scale factor = Length of the image / Length of the preimage

Front

What does the scale factor tell us about the distance of points from the center of dilation?

Back

It tells us how much farther away from, or closer to the center of dilation points will move.

Front

Do dilations preserve side length and angle measure?

Back

False

Front

What do we call a figure BEFORE a transformation is performed?

Back

Pre-Image

Front

What is the definition of a dilation in geometry?

Back

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

Front

What is the effect of a scale factor greater than 1 in a dilation?

Back

The figure enlarges.

Front

What is the effect of a scale factor between 0 and 1 in a dilation?

Back

The figure shrinks.

Front

If a triangle has vertices at (1, 2), (3, 4), and (5, 6), what are the new coordinates after a dilation with a scale factor of 2?

Back

(2, 4), (6, 8), (10, 12) - each coordinate is multiplied by 2.

Front

What is the center of dilation?

Back

The fixed point in the plane about which all points are expanded or contracted.