Similarity in Triangles

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

• Yes, SSS

• Yes, SAS

• Yes, AA

• Not similar.

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

• Yes, SSS

• Yes, AA

• Yes, SAS

• Not similar

Find the missing length indicated.

• 30

• 25

• 45

• 50

Tell whether the triangles are similar or not.

• a

• b

All angles in similar figures are congruent.

• True

• False

Are the triangles similar?

• Yes

• No

Are the triangles similar?

• Yes

• No

Which triangles are similar to triangle A?

• B

• C

• Both

• None

∠U = ≅

• ∠F

• ∠G

• ∠E

Tell whether the triangles are similar or not.

• a

• b