3 ms·
the 50p and 20p coins already have polygonal shapes, following this principle: https://en.wikipedia.org/wiki/Curve_of_constant_width https://en.wikipedia.org/wi
by anentropic 10y ago
the 50p and 20p coins already have polygonal shapes, following this principle:
https://en.wikipedia.org/wiki/Curve_of_constant_width https://en.wikipedia.org/wiki/Curve_of_constant_width