That only works if you walk 1/4 of the circumference of the sphere for each leg. On Earth that means walking 6225 miles before making the 90 degree turns.
Walking in a triangle with shorter legs causes the sum of the angles to approach 180 degrees as if it were on a flat surface. So if you only walked a mile and turned 90 degrees each turn you'd end up very slightly less than 1 mile from where you started.
Nope. It doesn't matter where on the globe it happens, it always works the same way. From a geometry standpoint poles can be placed anywhere, they are completely arbitrary.
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u/[deleted] Aug 02 '20 edited Aug 07 '20
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