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April 20, 2014

April 20, 2014

Posted by **DAVISHA** on Wednesday, February 4, 2009 at 12:06am.

- math -
**Chopsticks**, Wednesday, February 4, 2009 at 12:07amif their slope is negative reciprocal to each other, then they are perpendicular.

Dude what the hell is wrong with you?

- math -
**DAS**, Wednesday, February 4, 2009 at 12:10amone can determine if two lines are perpendicular if thier they share a common point and the product of thier slopes are -1

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