Dilations Intro and Scale Factor

In this figure, triangle TRS is the ​ (a)   , triangle T'R'S' is the ​ (b)   and a(n) ​ (c)   occurred.

• pre-image

• image

• enlargement

• reduction

• spin

• flip

Which of the following statements is true about the scale factor (k) for this dilation?

In this figure, triangle ABC is the ​ (a)   and triangle A'B'C' is the ​ (b)   . The scale factor for this dilation is ​ (c)   . A(n) ​ (d)   occurred.

• pre-image

• image

• 2

• reduction

• enlargement

• None of the above

• 1/2

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

The ONLY time a dilation would produce a congruent figure is if the the scale factor equaled _____.

• 1/2

• 2

• 10

• 1

What scale factor was used to produce the image?

• 2

• -2

• ¹/₂

• 1

What is the scale factor from ΔDEF to ΔABC?

• 1/2

• 7/3

• 2

• 10/3

What is the scale factor of the dilation of ABC to XYZ? (Hint: You may need to simplify your original ratio.)

• 2

• 3

A ~ B. What is the scale factor of the dilation of A to B? (Hint: B is the new image.)

• 3

• 4