Dilation or Reductions

Mark the following statements about dilations True or False:

The size of a figure changes under a 

dilation.

• True

• False

Mark the following statements about dilations True or False:

The two types of dilations are reductions 

and enlargements.

• True

• False

What is a dilation called where the figure becomes larger?

• Enlargement

• Reduction

• Translation

• Congruent

What is a dilation called where the figure becomes smaller?

• Enlargement

• Reduction

• Rotation

• Chiquito

Circle the sequence of transformations that results in figures that are similar but not congruent.

• Reflection across the x-axis, translation right 4 units.

• Rotation 90° clockwise about the origin, reflection across the y-axis.

• Dilation with a scale factor of 3, translation 7 units down.

• Rotation 180° about the origin, translation 4 units up.

Which sequence of transformations describes the transformation of Triangle ABC to Triangle YXZ?

• Vertical translation, dilation

• 90° clockwise rotation, dilation

• 180° rotation, reflection across a vertical line

• Dilation, reflection across a horizontal line

Enlargement or reduction?  Find the scale factor!

• It's an enlargement; the scale factor is 3.

• It's a reduction; the scale factor is 1/3.

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

• It's an enlargement; the scale factor is 2. 

Tags

dilate

A dilation is known as a​ (a)   transformation.

In this type of transformation, the image and the pre-image are ​ (b)   .

• rigid

• non-rigid

• congruent

• similar

Tags

dilate

Gabriela draws ABCD. Next she dilates ABCD by a scale factor of 3. What is the ordered pair for B'?

The green shape is a dilation of the black shape. Is it an enlargement or a reduction?

• Enlargement

• Reduction