Similar Figures and Slope

• Dilations always increase the length of line segments.

• Dilations take perpendicular lines to perpendicular lines.

• Dilations of an angle are congruent to the original angle.

• Dilations increase the measure of angles.

• Dilations of a triangle are similar to the original triangle.

• B

• C

• D

• E

• F

Hint: Remember OD x SF = DD (find the scale factor)

• 8

• 12.5

• 2.68

• 0.67

Find the length of EF.

• 0.67

• 2.01

• 12.01

• 4

Match the graph

• 
• 
• 
• 

What is the slope?

• Positive

• Negative

• Zero

• No Slope

Find the slope of the line.

• 1/2

• 2

• 3

• 3/2

Which of these lines has a slope of 5/2?

• A

• B

• C

Identify the slope (AC) of triangle ABC.

• 2

• 1/2

• -2

• -1/2

What is the slope in the picture?

• Positive

• Negative

• Zero

• Undefined