1.

For a linear triangular element with (xi, yi) as the coordinates of the ith node of the element, which option denotes twice the Area of the triangle?

A. (x1y2 x2y1) + (x2y3 x3y2) + (x3y1 x1y3)
B. (x1y2 x3y1) + (x2y3 x1y2) + (x3y1 x2y3)
C. (x1y2 x2y1) + (x2y3 x3y2)
D. (x1y1 x2y2) + (x2y2 x3y3) + (x3y3 x1y1)
Answer» B. (x1y2 x3y1) + (x2y3 x1y2) + (x3y1 x2y3)


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