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In the figure, AB\\ DC and BC. To prove that AB=CD, one must first show that ABC=CDA Which theorem or postulate can be used to justify ABC=CDA?

In the figure, AB\\ DC and BC. To prove that AB=CD, one must first show that ABC=CDA Which theorem or postulate can be used to justify ABC=CDA? class=

Answer :

ASA

AB is parallel to DC and AD is parallel to BC, that means the angles are the same

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