Similar Triangles Missing Angle

Which triangle(s) are similar to triangle A?

• Triangle B

• Triangle C

• Both

• Neither

Are the triangles similar?

• Yes

• No

Which triangle(s) are similar to triangle A?

• Triangle B

• Triangle C

• Both

• Neither

The Angle-Angle Similarity (AA ~) Theorem states if two angles of one triangle are _______________ to two angles of another triangle, then the triangles are ____________________.

• adjacent; equal

• complementary; scalene

• congruent; similar

• supplementary; isosceles

Given triangle ABC is similar to triangle DEF, label the missing angles.

c

d

e

84°

123°

57°

39°

53°

If the two triangles are similar, what is the m<N?

• 25

• 35

• 65

• 75

If the two triangles are similar, what is <F ?

• 95°

• 85°

• 75°

• 60°

Find the measure of each missing angle.

m<1 ​ (a)   m<2 ​ (b)   m<3 ​ (c)   m<4 ​ (d)  

• 35

• 145

• 55

• 125

• 120

• 40

• 36

• 132

• 64

Are the triangles similar?

• Yes

• No

How long is side x?

• 2 ft

• 3 ft

• 4 ft

• 6 ft