# How to Plan a Proof of the Properties of Parallel Lines?

You can plan geometric proofs by reasoning both forward and backward. You need to find some premises that you think you can use to deduce your conclusion. Reason forward from your premises; ask wha...
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http://www.ehow.com/how_8500249_plan-proof-properties-parallel-lines.html

## How to Write a Proof for Perpendicular and Parallel Lines?

Proofs involving parallel and perpendicular lines are actually quite easy to solve. Remember: When it comes to proofs, take what you want the answer to be and do the problem in reverse to create it.

http://www.wikihow.com/Write-a-Proof-for-Perpendicular-and-Parallel-Lines

## Ways to Make Parallel Lines & Perpendicular Lines?

According to Euclid, a straight line goes on forever. When there is more than one line in a plane, the situation becomes more interesting. If two lines never intersect, the lines are parallel. If t...
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http://www.ehow.com/info_8071696_ways-parallel-lines-perpendicular-lines.html

## Why Do Newspapers Use Parallel Lines?

Newspapers have seen their design evolve and develop over the decades, but some design elements in how pages are put together have remained constant. Among the most consistent design elements are l...
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http://www.ehow.com/facts_6809972_do-newspapers-use-parallel-lines_.html

## How do you define parallel lines?

Parallel lines are lines that lie side by side on the same plane and never intersect. They have the same slope, but different y-intercepts. No matter have far parallel lines are extended they will ...
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http://www.answerbag.com/q_view/1868127