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.
Create an 'arrow-head" matrix
Find the logic
Robust alignment of coordinate system
Mmm! Multi-dimensional Matrix Multiplication
Wrap a vector, but insert NaN's at the wrap-positions.
Insert certain elements into a vector.
Wayfinding 2 - traversing
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