I believe the diagonals would be perpendicular. So if it's on a graph/coordinate plane the slopes would be opposite. And all the sides would be the same length/2 sets are parallel/same slope
Answer: the slope is 0
Step-by-step explanation: hope it helps

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P.S. Hello from Russia :^)
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I don't know what you're asking but its $35 a piece with shipping.
Go to the x and y and find the numbers between them and mark them...tell me if this is confusing or not