Introduction to Similarity and Finding Scale Factor

Which of the following figures is a scaled copy of Figure A?

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• 
• 

If the scale factor is greater than one, what happens to the original shape?

• Stays the same

• Becomes Smaller

• Becomes Larger

If the scale factor is less than one, what happens to the original shape?

• Stays the Same

• Becomes Smaller

• Becomes Larger

If the scale factor is one, what happens to the original shape?

• Stays the Same

• Becomes Smaller

• Becomes Larger

Identify the scale factor from T to s.

• 4

• 12

Quad EFGH is a scaled copy of Quad ABCD. What is the value of x?

• 8

• 9

• 15

• 18.75

What is the scale factor from shape A to shape B?

• 1:1

• 2:1

• 3:1

• 1:2

What is the scale factor from ΔABC to ΔDEF?

• 1/2

• 7/3

• 2

• 10/3

Scale Factor of ½ is __________________ .

• Reduction

• Enlargement

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

• 4/3

• 2/3

• 3/4

• 2