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James is given the diagram below and asked to prove that angle D = angle F.

What would be the missing step of the proof?

Given: DE = FE, and EO forms the angle bisector of angle DEF.

Prove: Angle D=AngleF

James is given the diagram below and asked to prove that angle D = angle F. What would-example-1
User Revy
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1 Answer

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The angle DEF is bisected by EO. Thus, by the angle bisctor following holds.


\angle\text{DEO}\cong\angle\text{FEO}

Thus, answer is option D.

User Spelchekr
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