Given: StartFraction A D Over D C EndFraction = StartFraction B E Over E C EndFraction
Prove: Line segment A B is parallel to line D E
Triangle A C B is cut by line D E. Line D E goes through sides A C and B C. Angle A B C is 1, angle D E C is 2, and angle D C E is 3.
Complete the steps of the proof.
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