Similar Triangles and Proportionality

Find the missing length indicated.

Write down your work.

• 30

• 25

• 45

• 50

Solve for x.

Write down your work.

• 18

• 12

• 6.75

• 85.3

Which triangles are similar to triangle A?

• B

• C

• Both

• None

If two figures are similar, the corresponding sides are ______________.

• equal

• congruent

• proportional

• none of these

Find the length of DF, or state what additional information is needed to determine this length.

• To determine DF, we need the perimeter of both triangles

• To determine DF, we need the length of DE

• DF = 7

• DF = 5

Mathematical Equivalence

ON

Solve for x.

• 9

• 8

• 5

• 7

Find side length X.

• 30

• 25

• 15

• 40

Find the missing length indicated.

Write down your work.

• 6

• 10

• 5

• 12