The proves that ∆abc and ∆efg are congruent by the sas criterion.
a. angle a is congruent to angle e
b. b is congruent to angle f
c. ab=ef
d. angle c is congruent to angle g
if ab ≠ ef, criterion for congruency is violated
a. ssa
b. asa
c. sss
d. sas
in this situation, angle c g.
a. may be congruent to
b. is congruent to
c. cannot be congruent to