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arsen [322]
3 years ago
5

Gives 40 points! Answer quick!

Mathematics
1 answer:
Tcecarenko [31]3 years ago
7 0
Since CB || ED and CB = ED,

by the alternate interior angles theorem,
mE = mC, and mD = mB. 

with CB = ED, we can conclude that CBF = EDF, by SAS congruent theorem.

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