Posted by **Sharon** on Monday, October 3, 2011 at 9:35pm.

△ABC ; Ray CE bisects exterior angle BCD ; Ray CD||Line AB

- geometry -
**Steve**, Tuesday, October 4, 2011 at 8:52am
line CE and AB are cut by transversal AB, with corresponding angles equal.

SInce CE bisects BCD, ECD = BCE = BAC.

CD is just an extension of AB, so is parallel

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