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Aristarchos' half moon
Author:
A. G. Gomez (agg29@ou.ac.uk)
Illustration of Gomez's VA theory on the origin of Aristarchos' 87° angle.
GeoGebra
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Untitled
WC 2018
Erdős's problem #503, n=3
Conditions for Parallel Lines
Loyd's Two-Greek-Crosses-to-a-Square Dissection
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seilbååt
rotation
Demo: move 3 sliders from the keyboard
Flatarmál þríhyrnings
Semi-circular slices whose rotation frequencies are equal to their radii
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Correlation
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Pythagoras or Pythagorean Theorem
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