my third step for proving congruence is wrong, but i'm not sure what other one i can do?
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AB=DC (GIVEN)
angleACD= angleCAB (ALTERNATE ANGLES AS AB||DC)
AC=AC (COMMON SIDE)
Triangle ABC is congruent to TriangleCDA by SAS congruence rule...
Hope it helps*_*
twelftholmes:
oh thanks! i completely forgot about alternate angles with parallel lines..
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