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The sum of inverse squares of distances of P1 and P2 from Q equals the inverse square distance from P to Q.
The sum of inverse squares of distances of P1 and P2 from Q equals the inverse square distance from P to Q.
Limit circle Fb N
Limit circle Fb N
Title-page from Novae quadraturae arithmeticae, by Pietro Mengoli. 1650.
Title-page from Novae quadraturae arithmeticae, by Pietro Mengoli. 1650.