The Elements of Euclid, Bøker 1-6;Bok 11J.M. Dent & Sons, Limited, 1933 - 298 sider |
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Side 221
... cone is called a right - angled cone ; if it be less than the other side , an obtuse - angled cone ; and if greater , an acute - angled cone . 19. The axis of a cone is the fixed straight line about which the triangle revolves . 20. The ...
... cone is called a right - angled cone ; if it be less than the other side , an obtuse - angled cone ; and if greater , an acute - angled cone . 19. The axis of a cone is the fixed straight line about which the triangle revolves . 20. The ...
Side 222
Euclid Isaac Todhunter, Robert Simson. 20. The base of a cone is the circle described by that side containing the ... cones and cylinders are those which have their axes and the diameters of their bases proportionals . 25. A cube is a ...
Euclid Isaac Todhunter, Robert Simson. 20. The base of a cone is the circle described by that side containing the ... cones and cylinders are those which have their axes and the diameters of their bases proportionals . 25. A cube is a ...
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Vanlige uttrykk og setninger
ABCD AC is equal adjacent angles angle ABC angle ACB angle BAC angle DEF angle EDF angles equal Axiom base BC bisected centre circle ABC circumference Constr Construction Corollary Definition 15 demonstration diameter double draw equal angles equal to F equiangular equimultiples Euclid Euclid's Elements exterior angle fourth given circle given straight line gnomon greater ratio greater than F Hypothesis less Let ABC Let the straight meet multiple opposite angle parallel to BC parallelogram perpendicular polygon produced proportionals PROPOSITION 13 Q.E.D. PROPOSITION rectangle contained remaining angle right angles segment shewn sides similar and similarly Simson square described square on AC straight line &c straight line AB THEOREM tiples touches the circle triangle ABC triangle DEF twice the rectangle Wherefore