Given a matrix M(m,n), where m is the number of vertices of the geometrical element and n is 2 or 3 (2D-plane figure or 3D-solid). M contains coordinates of the vertices C=[x,y,z].
Find C, the center of mass of the element.
if test suit is changed then it is fail
Return unique values without sorting
Add two numbers
Area of an equilateral triangle
frame of the matrix
Find the function
subtract central cross
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