Conics: Book I-III |
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Common terms and phrases
AC and BD asymptotes axis bisected circle common quadrilateral comp cone or circumference conic section conjugate opposite sections constant ratio cutting the section differs from triangle drawn parallel drawn through F dropped ordinatewise ellipse equal Eucl Eutocius ex aequali figure on AC H parallel hyperbola joined and produced joining the points KRXL let AC let some point Let the common lines touching opposite opposite sections meet parabola parallel to AC point H point is taken point of meeting points of contact Proposition rectangle contained remainder quadr remainder rect right angle shown similar triangles sq.AC sq.AE sq.DE sq.HP square straight line drawn straight line joining straight lines cut straight lines touching tangents are drawn things supposed touch the section touching opposite sections Translator's Note trgl upright diameter upright side