Many cultures including the Westerners (Europeans), Arabs, and ancient Indians made contributions to geometry, but in my opinion, the Ancient Greeks contributed the most significant contribution - the Pythagorean Theorum.
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One main characteristic of non-Euclidean geometry is hyperbolic geometry. The other is elliptic geometry. Non-Euclidean geometry is still closely related to Euclidean geometry.
molecular geometry is bent, electron geometry is tetrahedral
Molecular geometry will be bent, electron geometry will be trigonal planar
It has seesaw geometry.
solid geometry