Scale Factors and Similar Figures

This video tutorial explains how to find missing sides and determine the scale factor in similar figures. It includes three examples: calculating the scale factor, finding a missing side, and solving for x in similar triangles. The video emphasizes using proportions and scale factors to solve these problems.

What is the primary focus of the video tutorial?

• Identifying different types of triangles

• Determining if figures are similar

• Finding missing sides and scale factors in similar figures

• Calculating area of figures

What is the first step in Example 1?

• Drawing two identical shapes

• Identifying the original and new shapes

• Calculating the area of the shapes

• Finding the perimeter of the shapes

How is the scale factor determined in Example 1?

• By adding the side lengths

• By dividing the new side by the original side

• By multiplying the side lengths

• By subtracting the original side from the new side

What is the scale factor found in Example 1?

• 3/2

• 3/5

• 5/3

• 2/3

In Example 2, what shape is used to find the missing side?

• Rectangle

• Triangle

• Circle

• Trapezoid

What is the scale factor used in Example 2?

• 2/3

• 3/2

• 5/3

• 3/5

How is the missing side calculated in Example 2?

• By multiplying the scale factor by the new side

• By subtracting the scale factor from the new side

• By setting up a proportion with the scale factor

• By adding the scale factor to the original side

What is the missing side length found in Example 2?

• 21

• 35

• 24

• 40

In Example 3, what is the unknown variable we are solving for?

• X

• A

• Z

• Y

What is the scale factor used in Example 3?

• 2/3

• 5/3

• 3/5

• 3/2