Scale Factor & Using Scale Factor

What happens to a figure if the scale factor is greater than 1?

• The figure remains the same size.

• The new figure will be a reduction.

• The new figure will be an enlargement.

• The figure will become distorted.

Tags

CCSS.8.G.A.3

If triangle ABC has sides of length 4, 6, and 8, and triangle DEF has sides of length 8, 12, and 16, what is the scale factor from triangle ABC to triangle DEF?

• 1

• 1.5

• 2

• 3

Tags

CCSS.7.G.A.1

How can you express a scale factor of 1:4 in decimal form?

• 0.15

• 0.25

• 0.35

• 0.45

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

What is the relationship between the areas of two similar figures and their scale factor?

• The area of the larger figure is equal to the square of the scale factor times the area of the smaller figure.

• The area of the larger figure is equal to the scale factor times the area of the smaller figure.

• The areas of two similar figures are always equal regardless of the scale factor.

• The area of the larger figure is equal to the sum of the areas of the smaller figure.

What happens to a figure if the scale factor is less than 1?

• The new figure will be a reduction.

• The new figure will be an enlargement.

• The new figure will remain the same size.

• The new figure will become a different shape.

Tags

CCSS.8.G.A.3

How do you determine the scale factor between two similar shapes?

• By adding the lengths of the sides of both shapes

• By multiplying the length of a side of the larger shape by the corresponding side of the smaller shape

• By dividing the length of a side of the larger shape by the corresponding side of the smaller shape

• By finding the average length of the sides of both shapes

Tags

CCSS.7.G.A.1

What is the scale factor from triangle ABC to triangle DEF if triangle DEF is a reduction of triangle ABC?

• 1

• Greater than 1

• Less than 1

• Equal to 1

Tags

CCSS.7.G.A.1

What is the scale factor from a rectangle with a length of 5 and a width of 3 to a rectangle with a length of 10 and a width of 6?

• 1.5

• 2

• 2.5

• 3

Tags

CCSS.7.G.A.1

If the scale factor is 1:3, what does this mean?

• This means that for every 1 unit of measurement in the smaller figure, there are 3 units in the larger figure.

• This means that the larger figure is 1/3 the size of the smaller figure.

• This means that the smaller figure is 3 times larger than the larger figure.

• This means that the measurements of both figures are equal.

Tags

CCSS.7.G.A.1

What is a scale factor?

• A number that scales or multiplies some quantity.

• A measurement of the area of a shape.

• A ratio that compares the lengths of two sides of a triangle.

• A constant that determines the color of an object.

Tags

CCSS.7.G.A.1