determinant [[0,(861.8)^2,1498^2,(829.2)^2,1],[(861.8)^2,0,1184^2,1109^2,1],[1498^2,1184^2,0,(878.2)^2,1],[(829.2)^2,1109^2,(878.2)^2,0,1],[1,1,1,1,0]]