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 sider |
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Side
... use of them , as illiterate favages . And the little atten- tion paid by ignorant men to those very circumstances which inform and enlarge the understanding , fhew us better than any thing else , what human nature can rise and fall to ...
... use of them , as illiterate favages . And the little atten- tion paid by ignorant men to those very circumstances which inform and enlarge the understanding , fhew us better than any thing else , what human nature can rise and fall to ...
Side 1
... use of commentaries , to conduct the learner , step by step , to a folid , rational and extensive view of the princi- ples of geometry ; by explaining their original and improvement through several different gradations , until they put ...
... use of commentaries , to conduct the learner , step by step , to a folid , rational and extensive view of the princi- ples of geometry ; by explaining their original and improvement through several different gradations , until they put ...
Side 19
... use of for communicating this kind of knowledge , taking notice at the fame time of some of the most unusual forms of expreffion and which are apt to perplex the learner at his first setting out . VOL . I. ċ 2 DISSERTATION Concerning ...
... use of for communicating this kind of knowledge , taking notice at the fame time of some of the most unusual forms of expreffion and which are apt to perplex the learner at his first setting out . VOL . I. ċ 2 DISSERTATION Concerning ...
Side 24
... use of an equilateral triangle to find out that propriety of a point fo pofited . " " The fecond part then of the propofition is the demonstrative " part thereof , namely , to prove from the principles already laid " down and granted ...
... use of an equilateral triangle to find out that propriety of a point fo pofited . " " The fecond part then of the propofition is the demonstrative " part thereof , namely , to prove from the principles already laid " down and granted ...
Side 25
... use of it . Searching there- " fore our store , we have no other medium to make a line equal to “ a line , than first by the help of a circle , defined definition 15 . " which by the third poftulatum is granted to be defcribable upon ...
... use of it . Searching there- " fore our store , we have no other medium to make a line equal to “ a line , than first by the help of a circle , defined definition 15 . " which by the third poftulatum is granted to be defcribable upon ...
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The Elements of Euclid: With Dissertations Intended to Assist and Encourage ... James Williamson,James Euclid Ingen forhåndsvisning tilgjengelig - 2016 |
Vanlige uttrykk og setninger
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
Populære avsnitt
Side 3 - Let it be granted that a straight line may be drawn from any one point to any other point.
Side 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...
Side 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.
Side 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.
Side 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.
Side 86 - When you have proved that the three angles of every triangle are equal to two right angles...
Side 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.
Side 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.
Side 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.
Side 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...