Dilation in Math

Ms. Pandrea claims the post-image is the darker shaded triangle (towards the top of the graph). Is she correct? Explain.

A transformation that enlarges an image is called

• translation

• reflection

• rotation

• dilation

A dilation produces a similar figure

• True

• False

The scale factor for this dilation is:

Mathematical Equivalence

ON

When the scale factor of a dilation is less than one, the dilation is a reduction.

• True

• False

When a dilation has a scale factor greater than one, the dilation is an enlargement.

• True

• False

What would be the scale factor (k) in the dilation shown?

• 1

• 1/2

• 4

• 2

A dilation is which of the following:

• only an enlargement

• only a reduction

• either an enlargement or a reduction

• neither an enlargement nor a reduction

Does the image show a Dilation? If yes, did the image enlarge, reduce or none of the above?

• Yes, enlarge

• Yes, reduce

• No

Under a dilation, which scale factor will result in a congruent image?

• -2

• 0

• 1

• ¹/₂