Understanding Proportions in Similar Figures

What is the first step in finding a missing side length in similar figures?

• Find the perimeter of the figures

• Calculate the area of the figures

• Identify the scale factor

• Set up a proportion with known and unknown sides

In the rectangle problem, which sides are identified as corresponding?

• WX and QR

• WZ and QT

• XY and RS

• YZ and ST

How do you simplify the ratio 12:18 in the rectangle problem?

• 4:5

• 3:4

• 2:3

• 1:2

In the triangle problem, which sides are used to set up the proportion?

• BA and ED

• AC and DF

• BC and EF

• AB and DE

What is the simplified form of the ratio 4:6 in the triangle problem?

• 4:5

• 1:2

• 2:3

• 3:4

In the parallelogram problem, which sides are identified as corresponding?

• CD and EH

• BC and GH

• AD and FG

• AB and EF

What is the simplified form of the ratio 18:12 in the parallelogram problem?

• 4:3

• 3:2

• 2:3

• 1:2

In the trapezoid problem, why is option D the correct proportion?

• It uses the longest sides

• It uses the shortest sides

• It maintains consistent order in ratios

• It uses the largest angles

Which option in the trapezoid problem incorrectly sets up the proportion?

• Option A

• Option B

• Option C

• Option D

What is the key to setting up a correct proportion in similar figures?

• Using the largest sides

• Using the smallest sides

• Using the longest diagonals

• Maintaining consistent order in ratios