08-07-2018
Mathematics

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which one of the following statements is true of a perpendicular lines

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alenna11 alenna11

08-07-2018

Now, important to let AB is perpendicular to BC

Ok then this is a rule from coordinate geometry in additional mathematics that is

mAB × mBC = -1

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jessieseeee jessieseeee

08-07-2018

The answer to this question is C

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