Scale Review

If the scale factor is less than one, the new figure will be

• an enlargement
• a reduction
• a scale factor
• bigger

If the scale factor is greater than one, the new figure will be

• a reduction
• an enlargement
• a scale
• not proportional

What is the scale factor from ΔDEF to ΔABC?

• 1/2
• 7/3
• 2
• 10/3

The two rectangles are scale drawings. What is the measurement of x?

Mathematical Equivalence

ON

sf = 1/2

• Reduction
• Enlargement

sf = 5

• Reduction
• Enlargement

sf = 0.8

• Reduction
• Enlargement

sf = 6/5

• Reduction
• Enlargement

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

• Congruent
• Vertical
• Similar
• Complementary 

All angles in similar figures are congruent.  

• True
• False