Use the properties of parallel lines to solve the problem.In the figure,     . Identify any pairs of congruent angles. 

A. ?ABC and ?ADE, ?ACB and ?AED
B. ?ABC and ?ACB, ?ADE and ?AED
C. ?ABC and ?ACB, ?DBC and ?ECB
D. ?ABC and ?ADE, ?ACB and ?BAC


Answer: A

Mathematics

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