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Using the diagram, find q + r, r + s, s + q, s - r.

How would I do this without having coordinates? Is there a different way to do this?

 Mar 21, 2020
 #1
avatar+22085 
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Maybe by 'guestimation'   q+r = u     r+s = w    s+q = t   s-r=v

 Mar 21, 2020
 #2
avatar+24 
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Haha, thank you! At first I wasn't sure if it was possible but I think I understand now.

booksly002  Mar 22, 2020

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