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Mathematics 7 Online
OpenStudy (anonymous):

c

OpenStudy (tyteen4a03):

I just gave you a reply...

OpenStudy (tyteen4a03):

You're given that BC = EC and AC = DC. Remember that <BCA is also = <DCE (vert. oppo. angles). This makes a congruent triangle (SAS). Since the 2 triangles are congruent, this will mean that AB = ED.

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