Question

7. let us show by calculation that the points (2, 1), (0, 0), (-1, 2) and(1, 3) are the angular points of a square​

Answer 1

Answer:

If the distance between all the point's are same then it is a square

Step-by-step explanation:

let is assume A=(2,1) , B= (0,0) , C=(-1,2) and D=(1,3)

the distance between AB=CD

AND THE FORMULA IS whole root (x2-x1)+(y2-y1)

In A 2 is x1 and 1 is y1

In B 0is x2 and another 0 is y2

AND

In C -1 is x1 and 2 is y2

In D 1 is x1 and 3 is y2

Answer 2

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