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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Resultat 1-5 av 47
Side 8
... ABC is equal to ACB . CHAP . IV . In what manner our common notions begin to take a fcientific form . AFTER the ... circle whofe radius is a thousand miles , or the thousand part of an inch , would furnish the fame conclufions as one of ...
... ABC is equal to ACB . CHAP . IV . In what manner our common notions begin to take a fcientific form . AFTER the ... circle whofe radius is a thousand miles , or the thousand part of an inch , would furnish the fame conclufions as one of ...
Side 23
... circle then will give you a line , in which are contained " all the points ... circumference ; to which every right line " drawn from a point in the middle ... ABC ; which was defired . This is " the first part of the pro- “ blem , and ...
... circle then will give you a line , in which are contained " all the points ... circumference ; to which every right line " drawn from a point in the middle ... ABC ; which was defired . This is " the first part of the pro- “ blem , and ...
Side 24
... circle , he chufes rather to " make use of an equilateral triangle to find ... ABC bounded and limited by " them is an equilateral triangle , according to ... circle to the " circumference in the fifteenth definition , that they are all ...
... circle , he chufes rather to " make use of an equilateral triangle to find ... ABC bounded and limited by " them is an equilateral triangle , according to ... circle to the " circumference in the fifteenth definition , that they are all ...
Side 26
... ABC was an equilateral triangle ; and there could be but " two fuch made upon the line AB in the fame plain ; there being " but two points where in those circles cut each other ; thofe cir- " cles determining all the lines equal to AB ...
... ABC was an equilateral triangle ; and there could be but " two fuch made upon the line AB in the fame plain ; there being " but two points where in those circles cut each other ; thofe cir- " cles determining all the lines equal to AB ...
Side 54
... ABC to be equal to DCB . I would recommend the performance of such con- ftructions as this , by the hand unguided by ... circle cut AB in fome fuch point as D ; be- cause the whole conftruction will be neceffary to convince the reader ...
... ABC to be equal to DCB . I would recommend the performance of such con- ftructions as this , by the hand unguided by ... circle cut AB in fome fuch point as D ; be- cause the whole conftruction will be neceffary to convince the reader ...
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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...