1² +2²+3² +....+n² =? (proof without word)
https://www.geogebra.org/m/hkedf53b
GeoGebra, Publisher, Daniel Mentrard
A proof without words of 12 + 22 + 32 + … + n2 = ?
22 January 2023 Edit: 22 January 2023
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- GeoGebra, Publisher, Daniel Mentrard
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