As an extension of the problem http://www.mathworks.com/matlabcentral/cody/problems/416-polygon-area, find the area, bounded by the border of the group of several points.
C = [1 -1; 1 1; -1 -1; -1 1; 0 0];
Link in Problem Statement appears to be defunct. However, there are several other related problems, per https://www.mathworks.com/matlabcentral/cody/problems?term=polygon+area
Area of the convex hull.
Extract leading non-zero digit
Get the length of a given vector
Sum the elements in either diagonal of a square matrix
Add two numbers
Find S-parameters of the circuit
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