Similar Shapes and Proportions

Which is the most correct definition for similar figures?

• Similar figures are figures that might have similarity.

• Similar figures are figures that have the same shape, but may have different sizes.

• Similar figures only pass Side-Angle-Side.

• Similar figures are different shapes that have the same proportions.

Answer question in photo

• 40 in

• 34 in

• 38 in

• 14 in

• 10 in

• 5 in

• 1/2 in

• 2 and 1/2 in

What is the scale factor from ΔDEF to ΔABC?

• 1/2

• 7/3

• 2

• 10/3

The blueprint(drawing) of this house has a length of 6 inches.  The actual house has a length of 18 feet.  What is the scale used?

• 1 inch: 3 feet

• 1 inch: 6 feet

• 3 inches: 6 feet

• 3 inches: 12 feet

Are these figures similar? Why or why not?

• Yes, their shapes are the same

• No, their corresponding sides are not equal.

• No, their corresponding sides are not proportional.

• Yes, their corresponding sides are proportional

A drawing of a flagpole uses the scale 1 in = 4 ft. If the pole measures 12 inches in drawing, how tall is the actual pole?

• 16 feet

• 3 feet

• 48 feet

• 9 feet

Find missing side

• 5

• 7

• 9

• 11

A room has an actual width of 20 feet and length of 25 feet.  How should the scale drawing look like if the scale used is 1 unit: 5 feet?

• A

• B

• C

• D