Dilation Review

In a DILATION, everything about the two shapes/images is congruent (same) except...

• size

• angles

• the type of shape

SCALE FACTOR describes the number that is multiplied by a pre-image that determines...

• how many times bigger an image gets

• how many times smaller an image gets

• how many times bigger or smaller an image gets

Which scale factor below would result in a dilation that is smaller than the pre-image?

• 0.5

• 3.5

• 2

• 4

A dilation that increases in size will always have a scale factor that is...

• negative

• exactly 1

• greater than 1

• less than 1

What scale factor was used in this magnifying glass?

• 10

• 5

• 2.5

• 2

In this dilation, point A would be considered...

• the center of dilation

• the scale factor

• the center of rotation

• the point of no return

Which image was the original/pre-image?

• ABCD (blue/larger)

• A'B'C'D' (orange/smaller)

Which figure is a scaled copy/ dilation of Shape A?

• Shape B

• Shape C

• Shape D

PQRS is a scaled copy/dilation of ABCD. Which side length on PQRS corresponds to BC?

• Side PQ

• Side QR

• Side RS

• Side SP

PQRS is a scaled copy/dilation of ABCD. Wich angle on ABCD corresponds to angle PSR?

• Angle BAD

• Angle ABC

• Angle BCD

• Angle ADC