Consider parallelogram ABCD in the diagram.  The dotted lines are extensions of the sides of the parallelogram. How could you prove ∠CAB≅∠CDB? Choose the answer that best fills each blank ( -- ). First, ∠CDB≅∠DBE because they are --. Next, ∠DBE≅∠CAB because they are --. By -- ∠CAB≅∠CDB. ANSWER CHOICES ( you can only use one per blank. )

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