Four pointsA(x1; y1), B(x2; y2), C(x3; y3), D(x4; y4)are the vertices of parallelogram. Determine the length of the diagonals and find the coordinates of their intersection.
In 4-lines through the gap defined x and y coordinates of successive peaks parallelogram, respectively points A, B, C and D. All numbers in absolute value does not exceed 100.
The first line print after a gap of x and y coordinates of the point O, in the second - print the length of the diagonal ACand through a gap - BD. The results lead to three decimal.
4 6 11 6 10 2 3 2
7.000 4.000 7.211 8.944