Skills Practice

NAME

DATE

4-6

PERIOD

Skills Practice

Refer to the figure at the right.

C

−− −−− 1. If AC ! AD, name two congruent angles.

B

−−− −−− 2. If BE ! BC, name two congruent angles.

D A

E

3. If ∠EBA ! ∠EAB, name two congruent segments.

4. If ∠CED ! ∠CDE, name two congruent segments.

Find each measure. 5. m∠ABC

6. m∠EDF

#

& 40°

60°

Copyright © Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.

"

$


'

%

ALGEBRA Find the value of each variable. 7.

8. 2x + 4

3x - 10

9. PROOF Write a two-column proof. −−− −−− Given: CD ! CG −−− −−− DE ! GF −−− −− Prove: CE ! CF

Chapter 4

(2x + 3)°

D E C F G

39

Glencoe Geometry

Lesson 4-6

Isosceles and Equilateral Triangles