Question 1040537
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1. &nbsp;If the sides of the rectangle are not parallel to coordinate axes "x" and "y", &nbsp;then the product is 1.


2. &nbsp;If the sides of the rectangle are parallel to coordinate axes "x" and "y", &nbsp;then two of the slopes are not defined, 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;so the product is not defined too.


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