Dilation

Is this an enlargement or a reduction?

• Enlargement

• Reduction

Is this an enlargement or a reduction?

• Enlargement

• Reduction

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

• Enlarge

• Reduce

• None of the above

Rectangle A'B'C'D' is similar to rectangle ABCD. What transformations were used to get these similar shapes?

• a translation 8 units to the left, then a dilation by a scale factor of 1/2 with a center of dilation at the origin

• a reflection over the y-axis, then a dilation by a scale factor of 1/2 with a center of dilation at the origin

• a dilation by a scale factor of 1/2 with a center of dilation at the origin, then a 90 degree counterclockwise rotation about the origin

• a 90 degree counterclockwise rotation about the origin, then a dilation by a scale factor of 1/2 with a center of dilation at the origin

When you zoom in or out on a picture on a smartphone, it is called a ___________

• Translation

• Rotation

• Reflection

• Dilation

A dilation is an example of__________________________

• Congruence

• Similarity

• Neither

When you zoom in or out, the screen scales around a center of ______________.

• Rotation

• Translation

• Reflection

• Dilation

Dilate Point B by a scale factor of 3:

• (12,0)

• (4,3)

• (12,12)

• (0,12)

Which transformation does not preserve congruence?

• translation

• rotation

• reflection

• dilation

a transformation that changes size by multiplying

• scale factor

• corresponding

• translation

• dilation