a quadrilateral on the sphere having opposing sides of equal length isn't really a parallellogram, because there are no parallel lines on a sphere. such a shape that also has equal vertex angles isn't really a rectangle, because its angles are all >90°. you can in fact, have a rectangular triangle on the sphere, i.e. a triangle whose angles are all right

what to call such shapes? i should talk to my sister, she's an expert in the nomenclature of simple shapes. that is, she teaches kindergarten

RT @MachinePix@twitter.com

“Portal Icosahedron”, a sculpture by Anthony James.

🐦🔗: https://twitter.com/MachinePix/status/1197621434270416897

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#QGIS is pretty great. Why have I been trying to do GIS stuff in just R for so long?

Support vector machines

All vector machines are valid

#vectormachineally