Similar Triangle Unknown Length

Find the length of x

• x = 1

• x = 2

• x = 7

• x = 1/7

Triangle ABC and XYZ are similar.  Use your knowledge of scale factor to find the length of X.

• 20

• 25

• 100

• 40

Find the length of the missing side

• 5

• 7

• 9

• 11

Find the missing side, denoted by x.

• 8cm

• 16cm

• 9.6cm

• 10cm

Find the missing side, denoted by x.

• 6

• 4.5

• 3.5

• 9

Find the length of side BD.

• 7.5cm

• 10cm

• 2.5cm

• 5cm

Two objects that are the same shape but not the same size are _______.

• Congruent

• Vertical

• Similar

• Complementary 

All corresponding sides are proportional (same ratio) in similar figures.

• True

• False

Find the measure of x.

• 26

• 22

• 12

• 15

Tell whether the two figures are similar. Explain your reasoning.

• 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