I linked to the relevant Wikipedia articles in my comment.
Ah, but note the ‘history’ section of the Thales article. It rather supports my picture, if it supports anything at all.
Why? If you mean that Thales learned the result from the Babylonians, the point is that he appears to have been the first to bother proving it.
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I linked to the relevant Wikipedia articles in my comment.
Ah, but note the ‘history’ section of the Thales article. It rather supports my picture, if it supports anything at all.
Why? If you mean that Thales learned the result from the Babylonians, the point is that he appears to have been the first to bother proving it.