The Elements of Euclid: With Dissertations Intended to Assist and Encourage a Critical Examination of These Elements as the Most Effectual Means of Establishing a Juster Taste Upon Mathematical Subjects Than that which at Present PrevailsPrinted at the Clarendon Press, 1781 - 309 σελίδες |
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Σελίδα 122
... multiple and part . Take two straight lines , one of them fixt and the other undetermined ; by the third propofition of the first book two unequal lines being given , you may cut off a part from the greater equal to the lefs ; and thus ...
... multiple and part . Take two straight lines , one of them fixt and the other undetermined ; by the third propofition of the first book two unequal lines being given , you may cut off a part from the greater equal to the lefs ; and thus ...
Σελίδα 123
... multiple unless the circles be equal but to fettle this more particularly let us confider what magnitudes , we can multiply , that is measure exactly , and in what circumstances : Now we can multiply or measure exactly , two straight ...
... multiple unless the circles be equal but to fettle this more particularly let us confider what magnitudes , we can multiply , that is measure exactly , and in what circumstances : Now we can multiply or measure exactly , two straight ...
Σελίδα 124
... multiple and part to one , who has no other principles to go upon but thofe contained in the first four books . It may be thought that particular inftances explaining each of these circumstances would have been useful ; but the ...
... multiple and part to one , who has no other principles to go upon but thofe contained in the first four books . It may be thought that particular inftances explaining each of these circumstances would have been useful ; but the ...
Σελίδα 125
... multiples are divided into their parts , the number of divifions in each is the fame ; as in the inftances above , HC is divided into three parts each equal to BC ; and the triangle AHC into three parts also each equal to the triangle ...
... multiples are divided into their parts , the number of divifions in each is the fame ; as in the inftances above , HC is divided into three parts each equal to BC ; and the triangle AHC into three parts also each equal to the triangle ...
Σελίδα 126
... multiple , equimultiples or parts of a straight line the same may be readily transferred to triangles or pa ... multiple of E ; equimultiple you mean ; no , not so fast let us examine one thing at a time ; I fay that the supposition is ...
... multiple , equimultiples or parts of a straight line the same may be readily transferred to triangles or pa ... multiple of E ; equimultiple you mean ; no , not so fast let us examine one thing at a time ; I fay that the supposition is ...
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The Elements of Euclid: With Dissertations Intended to Assist and Encourage ... James Williamson,James Euclid Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2016 |
Συχνά εμφανιζόμενοι όροι και φράσεις
ABCD alfo alſo angle ABC angle BAC angle contained angle equal apply itſelf bafe baſe BC is equal Book certainly circle ABC circumference common notion confequences conft conftruction cut in halves demonftrated deſcribed diſtance drawn equal angles equiangular equilateral equimultiples Euclid exceed faid fame manner fame multiple fame parallels fame ratio fame reaſon fecond fegment fhall fides fimilar fince firſt fome fquare ftraight line BC fuch fuppofe fuppofition given rectilineal given ſtraight line Gnomon greater hath himſelf impoffible infcribed joined lefs leſs let the ftraight magnitudes moſt muſt neceffary parallelogram PROP propofition proportionals purpoſe reader reaſon rectangle contained rectilineal figure remaining angle remaining fides right angles ſame ſay ſhall ſhould ſome ſquare ſtraight line AB ſubject ſuch ſuppoſe taken theſe thoſe tiple triangle ABC underſtand uſe Wherefore becauſe
Δημοφιλή αποσπάσματα
Σελίδα 3 - Let it be granted that a straight line may be drawn from any one point to any other point.
Σελίδα 47 - If there be two straight lines, one of which is divided into any number of parts, the rectangle contained by the two straight lines is equal to the rectangles contained by the undivided line, and the several parts of the divided line. Let...
Σελίδα 68 - If a straight line drawn through the centre of a circle bisect a straight line in it which does not pass through the centre, it shall cut it at right angles : and if it cut it at right angles, it shall bisect it.
Σελίδα 45 - ABG ; (vi. 1.) therefore the triangle ABC has to the triangle ABG the duplicate ratio of that which BC has to EF: but the triangle ABG is equal to the triangle DEF; therefore also the triangle ABC has to the triangle DEF the duplicate ratio of that which BC has to EF. Therefore similar triangles, &c.
Σελίδα 15 - When a straight line set up on a straight line makes the adjacent angles equal to one another, each of the equal angles is right, and the straight line standing on the other is called a perpendicular to that on which it stands.
Σελίδα 86 - When you have proved that the three angles of every triangle are equal to two right angles...
Σελίδα 88 - EA : and because AD is equal to DC, and DE common to the triangles ADE, CDE, the two sides AD, DE are equal to the two CD, DE, each to each ; and the angle ADE is equal to the angle CDE, for each of them is a right angle ; therefore the base AE is equal (4.
Σελίδα 42 - If four straight lines be proportionals, the rectangle contained by the extremes is equal to the rectangle contained by the means ; And if the rectangle contained by the extremes be equal to the rectangle contained by the means, the four straight lines are proportionals. Let the four straight lines, AB, CD, E, F, be proportionals, viz.
Σελίδα 109 - Draw two diameters AC, BD of the circle ABCD, at right angles to one another; and through the points A, B. C, D, draw (17.
Σελίδα 8 - GB is equal to E, and CK to F ; therefore AB is the same multiple of E, that KH is of F: But AB...