Perimeter and Proportions

The triangles are similar. Solve for x.

• 4

• 5

• 6

• 7

Solve for x.

• 8

• 6

• 5

• -8

Solve for x and y.

• x=11.43, y=42.78

• x=11.43, y=192.5

• x=14, y=48

• x=10, y=11.43

What side corresponds with DE?

• CA

• AB

• EC

• BA

What side corresponds with BC?

• FD

• ED

• EC

• CB

What is the value of X?

• 92

• 2.04

• 2.15

• 2.5

The perimeter of a rectangle is 280 cm. The ratio of the width to the length is 3:4. What is the length of the rectangle?

• 20

• 40

• 60

• 80

One property of similar triangles is that corresponding angles of two similar triangles are congruent. What is the second property of similar triangles?

• Corresponding sides are congruent

• Corresponding sides are unrelated

• Corresponding sides are equal

• Corresponding sides are equally proportional

Tell whether the two figures are similar. Explain your reasoning. (Hint: are they proportional?)

• Yes, similar because they are the same shape and side lengths are proportional.

• No, not similar because they are the same shape, but side lengths are not proportional.

• Yes, same shape

• No, different sizes

Solve the proportion.

• k=5

• k=3.3333333

• k=60

• k=90