A simple visual proof that: 1+2+3+...+n = (n²+n)/2 ⚪ ⚫⚫⚫ ⚪⚪ + ⚫⚫ ⚪⚪⚪ ⚫ = ⚪⚫⚫ ⚫ ⚪⚪⚫ + ⚫ ⚪⚪⚪ ⚫
Fermat's Library on Twitter 
Added 5 months ago by goretextures ‌‌
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Fermat's Library on Twitter 
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A simple visual proof that: 1+2+3+...+n = (n²+n)/2 ⚪ ⚫⚫⚫ ⚪⚪ + ⚫⚫ ⚪⚪⚪ ⚫ = ⚪⚫⚫ ⚫ ⚪⚪⚫ + ⚫ ⚪⚪⚪ ⚫
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