(New page: On the very first problem, is this one where we need to prove both parts? Or am I just reading it incorrectly? '' If l and m are parallel, then each pair of exterior angles on the same si...)
 
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On the very first problem, is this one where we need to prove both parts?  Or am I just reading it incorrectly?
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Checking
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If l and m are parallel, then each pair of exterior angles on the same side of the transversal adds up to 180 degrees.  If at least one pair of exterior angles on the same side of the transversal adds up to 180 degrees, then l and m are parallel. ''
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Latest revision as of 12:27, 30 November 2010

Checking

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Basic linear algebra uncovers and clarifies very important geometry and algebra.

Dr. Paul Garrett