4.2 Review Worksheet (continued)
Determine if you can use the HL Congruence Theorem to prove the triangles congruent. If not, tell what else you need to know. 10. △ GHJ and △ JKG G H 11. △ ABE and △ DCE , given that E is the midpoint of AD and BC A
E
C
K
J
B
D
4.2.3 Triangle Congruence: CPCTC 12. To find the distance AB across a river, a surveyor first locates point C . He measures the distance from C to B . Then he locates point D the same distance east of C . If DE = 420 ft. what is AB ?
A
500 ft
B
D
C
500 ft
E
13. Given: M is the midpoint of PQ and RS . Prove: QR ≅ PS R
14. Given: WX ≅ XY ≅ YZ ≅ ZW Prove: ∠ W ≅ ∠ Y W X
P
Q
M
Z
Y
S
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