Introduction to Scale Factors

What is the scale factor from ΔDEF to ΔABC?

• 1/2
• 7/3
• 2
• 10/3

What is the scale factor from ABCD to MNOP?

• 2/3
• 3/2
• 2
• 3

What is the scale factor if the triangle on the left is the original?

• 2
• 3/2
• 2/3
• 1/2

_{Line AB corresponds with what line?} 

• XZ
• XY
• YZ
• YX

Line BC corresponds with what line? 

• XZ
• XY
• YZ
• YX

Line CB corresponds with what line? 

• SR
• PQ
• SP
• RQ

Line DC corresponds with what line? 

• SR
• PQ
• SP
• RQ

Find side length X.

• 16
• 18
• 2.4
• 15

A scale factor greater than one creates ....

• a reduction
• an enlargement
• an exact copy
• none of these

Jill's room is 12.5 feet long and 11.5 feet wide. She made a scale drawing of the room with a scale of 0.5 inch= 2 feet.  What is the PERIMETER of Jill's room in the drawing described?

• 12 inches
• 24 inches
• 48 inches
• 96 inches