Dilations and Scale Factor

Front

What is the scale factor?

Back

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

Front

Did the image enlarge, reduce or none of the above?

Back

The image reduced.

Front

If the blue polygon is the original image, find the scale factor and determine if it is a reduction or enlargement.

Back

It's a reduction; the scale factor is 1/2.

Front

What is the scale factor from the small shape to the big shape?

Back

The scale factor is 2.

Front

_________ ________ is the number you multiply by the sides to create a similar figure.

Back

Scale Factor.

Front

What does a scale factor greater than 1 indicate?

Back

It indicates an enlargement of the figure.

Front

What does a scale factor less than 1 indicate?

Back

It indicates a reduction of the figure.

Front

If a shape is dilated by a scale factor of 3, what happens to its area?

Back

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

Front

If a triangle has sides of 2, 3, and 4, and is dilated by a scale factor of 1/2, what are the new side lengths?

Back

The new side lengths are 1, 1.5, and 2.

Front

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

Back

The original figure and the dilated figure are similar.