BTW Wikipedia's the source for the 4% number: https://en.wikipedia.org/wiki/Antipodes It's 4% of surface area, 15% of land surface area. On Fri, Apr 19, 2019 at 9:11 AM Mike Stay <metaweta@gmail.com> wrote:

Four percent. This guy found a set of points at the corners of a tetrahedron and placed physical corners to mark the points. http://www.mylovedone.com/IMaGe/Monograph1/PlatonicSolids.html

On Fri, Apr 19, 2019 at 8:48 AM Hans Havermann <gladhobo@bell.net> wrote:

...

Carl Lange just calculated that about 60% of New Zealand's land surface area has above-sea-level land at its antipode. I'm still hoping for an estimate of such a percentage for the entire planet's above-sea-level surface area.

https://mathematica.stackexchange.com/questions/195591/antipodal-land-area-c...

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-- Mike Stay - metaweta@gmail.com http://math.ucr.edu/~mike https://reperiendi.wordpress.com

-- Mike Stay - metaweta@gmail.com http://math.ucr.edu/~mike https://reperiendi.wordpress.com