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Hi there! Have questions about your homework? At Brainly, there are 60 million students who want to help each other learn. Questions are usually answered in less than 10 minutes. Try it for yourself by posting a question! :D

Given let the points be A,B,C,D. distance between points under root (x2-x1) whole square+(y2-y1)whole square so distance of AB=under root 20 distance of BC= " " 80 " " CD= " " 20 " " DA= " " 80 THAT MEANS THAT opp sides are equal then diagonals must also be equal then AC=10 and BD=10 as diagonals and opp sides are equal they are vertices of rectangle

For this jst show two opposite sides and diagonals equal and in the end write that its proved that it is a rectangle.............................that's it.