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function length = polygonCircum(x, y)
length = 0;
n = size(x, 2);
if n > 0 && size(x, 2) == size(y, 2)
for i = 1:n -1
a = x(i) - x(i+1) ;
b = y(i) - y(i+1) ;
length = length + pytagoras(a, b);
end
a = x(n) - x(1) ;
b = y(n) - y(1) ;
length = length + pytagoras (a, b);
end
end |