Similar Triangles Scale Factor

What is the scale factor from ΔABC to ΔXYZ?

• 4/5

• 3/2

• 2

• 5/2

• 5/4

The figures are similar.

Find the missing side.

• 10

• 10.5

• 12

• 12.5

• 16

What is the scale factor from ΔABC to ΔDEF?

• 1/2

• 7/3

• 2

• 10/3

• 3/10

Two shapes are ___________ if their corresponding sides are proportional and their corresponding angles are congruent.

• Similar

• Ratio

• Scale factor

• Not similar

Are the triangles similar? If so, what is the scale factor from ΔDEF to ΔABC?

• Yes. 1.5

• Yes. ⅔

• Yes. 2

• No.

Two similar triangles have a scale factor of ⅔. The area of the larger triangle is 12 cm².

What is the area of the smaller triangle?

• 4 cm²

• 8 cm²

• 9 cm²

• 12 cm²

• 24 cm²

The figures are similar.

Find the missing side.

• 30

• 34

• 36

• 38

• 40

The figures are similar. Find the missing side.

• 9

• 12

• 8.5

• 6

• 10

The figures are similar.

Find the missing side.

• 52.5

• 50

• 48.5

• 54

• 60

The figures are similar.

Find the missing side.

• 26

• 27.6

• 25.2

• 28.8

• 30.4