The problem's figure is missing. We can use our solution for problem 1720 (https://nl.mathworks.com/matlabcentral/cody/problems/1720-do-the-lines-intersect). However, line matrices are transposed in this problem. And for the picture, we can imagine an instance of Buffon's needle problem without horizontal lines.
Angle between two vectors
Back to basics 20 - singleton dimensions
Reverse the elements of an array
Wrap a vector, but insert NaN's at the wrap-positions.
Insert certain elements into a vector.
Only once: cleaning up your columns
Convert nested struct-array to numeric array
Create a random logical vector of N elements of which M are true.
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