Dilation/Similar Figure Review

In Similar Figures, corresponding angles are __________

• Proportional

• Congruent

• Sometimes the same but not always

• Acute

Answer explanation

The reason that similar figures stay the same shape is because the angles are congruent.

In Similar Figures, Sides are _____

• Proportional

• Congruent

• Stretched

• Usually smaller

Answer explanation

The reason similar figures may be a different size is the sides are proportional.

In a dilation, if the scale factor is bigger than 1, the image will be a _____

• Shrink

• Stretch

• Congruent

• Disappear

A dilation is described by a ______ and a _______

• Center of Dilation

• Hypotenuse

• Scale Factor

• Corresponding Angle

Select ALL the true statements about an image after a dilation.

• The image is a different shape than the preimage.

• The image is a different size than the preimage.

• The image has the same angle measures as the preimage.

• The image is similar to the preimage.

• The image has the same side lengths as the preimage.

In a dilation, if the scale factor is 1, the image will be a _____

• Shrink

• Stretch

• Congruent

  Figure

• Disappear

Find a.

• 80

• 16

• 20

• 5

Which of the following is NOT true about similar figures?

• Similar figures always have the same shape.

• Similar figures always have the same size.

• Similar figures have corresponding angles that are equal.

• Similar figures always have corresponding sides that are proportional.

True or False: This set of ratios is proportional.

5/6 = 25/36

• True

• False

SHRINK

• Figure with the same shape and size

• Figure with the same shape, but not the same size

• A type of dilation where the shape gets smaller

• A type of dilation where the shape gets bigger