Trisecting the Angle/Parabola/Historical Note
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Historical Note on Trisection of Angle by Parabola
Use of the parabola to trisect an angle appears to have originated with René Descartes.
Sources
- 1986: David Wells: Curious and Interesting Numbers ... (previous) ... (next): $3$
- 1992: George F. Simmons: Calculus Gems ... (previous) ... (next): Chapter $\text {A}.11$: Descartes ($\text {1596}$ – $\text {1650}$)
- 1997: David Wells: Curious and Interesting Numbers (2nd ed.) ... (previous) ... (next): $3$