Finding Missing Side Lengths with Scale Factors

What indicates that a scale factor should be greater than one?

• No information about shape sizes is given.

• The original shape is larger than the new shape.

• The original shape is smaller than the new shape.

• Both shapes are of the same size.

How do you determine the scale factor between two shapes?

• By multiplying the corresponding side lengths.

• By adding the side lengths of both shapes.

• By subtracting the side lengths of the shapes.

• By dividing the side length of the larger shape by the smaller shape.

What is the missing side length of rectangle B when the scale factor is 2 and the corresponding side length is 4 cm?

• 16 cm

• 8 cm

• 4 cm

• 2 cm

What should the scale factor be when the original shape is larger than the new shape?

• Equal to one

• Less than one

• Greater than one

• Cannot be determined

How is the scale factor calculated when going from a larger to a smaller shape?

• Always use the number ten as the numerator

• Always use the number one as the numerator

• Numerator is the larger number

• Numerator is the smaller number

What is the missing height of rectangle B when the scale factor is one third and the given height of rectangle A is 6 cm?

• 18 cm

• 2 cm

• 6 cm

• 3 cm

What should you do after calculating the missing side length using the scale factor?

• Ignore the result

• Repeat the calculation

• Start a new calculation

• Check if the answer makes sense

What is the missing side length in problem number one?

• 6 feet

• 12 feet

• 1.5 feet

• 3 feet

What is the missing side length in problem number two?

• 3 feet

• 6 feet

• 1.5 feet

• 12 feet

What should you do if your calculated answer is incorrect?

• Guess a different answer

• Change the scale factor randomly

• Review and find the mistake

• Ignore the mistake