Real World Triangle Similarity

Find the value of x using proportions.

• a

• b

• c

• d

Find the missing length indicated.

• 30

• 25

• 45

• 50

Find the missing length indicated. 

• 16

• 8

• 10

• 14

Find the missing length.

• 21

• 18

• 16

• 24

Ray places a mirror on the ground 44 ft from the base of a geyser. He walks backward until he can see the top of the geyser in the middle of the mirror. At that point, Ray's eyes are 6.25 ft above the ground, and he is 11 ft from the mirror. Use similar triangles to find the height of the geyser.

• 28 ft

• 25 ft

• 30 ft

• 36 ft

Tell whether the triangles are similar or not.

• a

• b

Tell whether the triangles are similar or not.

• a

• b

Find the missing side using proportions.

• a

• b

• c

• d

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

• equal

• congruent

• proportional

• none of these

Are these two triangles similar? Which similarity criterion do you use to prove it?

• Yes, AA

• Yes, SAS

• Yes, SSS

• Not Similar