G.E. Ivey
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> Do you have the answers to the rest of your course? I
> am completing that course and need some help on how
> to do some of the problems.
>
>
Then I strongly recommend that both of you open your textbooks and learn the DEFINITIONS. Definitions in mathematics are "working" definitions- you use the precise words in the definitions in proofs and solving problems. Definitions must be learned by heart. If you know what "perpendicular" means, the first question is trivial.