Answer Key

Answer Key Reteaching with Practice

→

1. ABC, CBA, B; vertex B, sides BA and

→ → BC 2. DEF, FED, E; vertex E, sides EF → and ED 3. 35 4. a. acute b. obtuse y

y

A

A 2

B

B C

1

D 1

D

C

x

c. obtuse

1

x

y

A 2

B

D

C 1

5. a. straight

x

b. acute

y

y

I

F 1

G

F

I 1

E

E x

1

H

H

c. obtuse

d. right

y

I

G

x

1

y

I

F

2

G

F

2

E

E G

x

1

H

H

e. right

y

I

F

2

G 1

H

E x

2

x