conic sections

Conic sections in the sand give shipwrecked philosophers good hope

  Conic sections in the sand give shipwrecked Socratic philosopher, Aristippus, good hope. I wonder if this ancient tale, in which the mathematics of planetary motion some 2000 years prior to it’s application in space travel, is used to signify the presence of intelligent life and therefore hope of salvation has some echo in our …

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Properties of conic section have been known since classical times.  This isosceles triangle in a parabola could still appear in school exams (FP1, STEP) in UK.