“Rough draft for an essay on the results of taking plane sections of a cone”
Text from Wikiquote, available under CC BY-SA 4.0.
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“Rough draft for an essay on the results of taking plane sections of a cone”
Text from Wikiquote, available under CC BY-SA 4.0.
Captured 2026-08-18 from Wikiquote. The archived copy is preserved so this citation survives link rot.