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For questions related to geometric shapes, congruences, similarities, transformations, as well as the properties of classes of figures, points, lines, angles.
8
votes
Why do we care about multiple proofs of the same theorem?
Claude Monet did a famous series of over 20 paintings, all of one or two haystacks, all in the the same field, with various types of light and weather conditions. Here's one example:
Here is anoth …
11
votes
Symmetry - practical uses
Symmetries give profound insight into structure. This is demonstrated by Noether's theorem, proved just under 100 years ago by Emmy Noether (probably the greatest female mathematician in history).
N …