Prove that the points A(3,4) B(6,7) C(9,4) and D(6,1) are the vertices of a square.
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1)find values of ab,bc,cd,da by using distance between two points
if all are equal then sides equal
2)find ac,bd
if both equal then diagonals are equal
3)find midpoint of ac or bd.both should be same.
4)from diagram AOB find angle between Oa and ob it Should be 45°
if all are equal then sides equal
2)find ac,bd
if both equal then diagonals are equal
3)find midpoint of ac or bd.both should be same.
4)from diagram AOB find angle between Oa and ob it Should be 45°
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