kk371 kk371
  • 08-07-2018
  • Mathematics
contestada

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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