Isabelle proves that the triangles are congruent by using the parallel lines to determine a second set of angles are congruent. What statement and reason could she have used?
Answer
A
∠ABC ≅ ∠BAC; corresponding angles of parallel lines are congruent.
B
∠CAB ≅ ∠DCB; alternate interior angles of parallel lines are congruent
C
∠ABC ≅ ∠DCB; alternate interior angles of parallel lines are congruent
D
∠ACD ≅ ∠ABD; corresponding angles of parallel lines are congruent.