Similarity and Scale

When you dilate a figure you...

• slide it.

• turn it.

• flip it.

• make it larger or smaller.

What is the scale factor from the large triangle to the small triangle?

• 4/3

• 2/3

• 3/4

• 2

What is the scale factor from the smaller triangle to the larger?

• scale factor = 3:2

• scale factor = 1:4

• scale factor = 2:3

• scale factor = 5:3

The scale drawing car length is 3 cm. If the scale is 1 cm:4 ft, what is the actual car length?

• 12 feet

• 16 feet 

• 10 feet

• 4 feet

What is the scale factor from ΔABC to ΔDEF?

• 1/2

• 7/3

• 2

• 10/3

What is the scale factor from ABCD to MNOP?

• 2/3

• 3/2

• 2

• 3

Two objects that are the same shape but not the same size are _______.

• Congruent

• Vertical

• Similar

• Complementary 

Scale Factor of ½ is __________________ .

• Reduction

• Enlargement

Scale Factor of 5 is _________________ .

• Reduction

• Enlargement

Solve the proportion.
____ = ____

• p=31.3

• p=308

• p=924

• p=532