Square

Points A[-9,7] and B[-4,-5] are adjacent vertices of the square ABCD. Calculate the area of the square ABCD.

Correct result:

S =  169

Solution:

a2=Δx2+Δy2  x0=−9 y0=7 x1=−4 y1=−5  a=(x0−x1)2+(y0−y1)2=((−9)−(−4))2+(7−(−5))2=13  S=a2=132=169

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