Do you mean "Coordinates in matrix are arranged in counter-clockwise direction"?
Yes. They are assumed to be in counter clockwise to match up with the test suites. Thanks. I have updated the definition.
Additional test cases have been added.
Back to basics 23 - Triangular matrix
Set some matrix elements to zero
Area of a circle
Matlab Basics - Absolute Value
Find elements of set A those are not in set B
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