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October 14th, 2011, 08:11 PM   #1
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Parallelogram problem

ABCD is a parallelogram. It has an angle ADE which is equal to angle FBC. a) Explain why angle ODE is equal to angle OBF. b) Prove that the triangle ODE is equal to triangle OBF. c) Hence, prove that DE and BF are parallel.
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October 14th, 2011, 09:41 PM   #2
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Can prior knowledge of the alternate interior angle theorem and its converse be assumed?
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October 14th, 2011, 10:09 PM   #3
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Re: Parallelogram problem

Didn't see that.
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