richard9957 richard9957
  • 10-02-2019
  • Mathematics
contestada

How do we know when to do the opposite reciprocal?

How do we know when to do the opposite reciprocal class=

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backseatdog
backseatdog backseatdog
  • 10-02-2019

Answer:

The corner of a rectangle is 90 degrees.  Therefore AB will be perpendicular to AD.

Step-by-step explanation:

Since those two lines are perpendicular, their slopes will be opposite reciprocals of each other.  So to find AB, first find AD, then take the opposite reciprocal of that slope.

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