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 Seiten |
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Seite 7
... ( called angles ) by the letters of the alphabet . The figure annexed will be a very proper one for practice and the ... called the angle FBC or CBF and the inclination of DB to BC is the very fame with the other , as is obvious , and is ...
... ( called angles ) by the letters of the alphabet . The figure annexed will be a very proper one for practice and the ... called the angle FBC or CBF and the inclination of DB to BC is the very fame with the other , as is obvious , and is ...
Seite 10
... called geometrical to diftinguifh them from the others . The definition of a circle , given by Euclid , is of this kind for all the properties of a circle follow as confequences from it . And here the reader is to be admonished , that ...
... called geometrical to diftinguifh them from the others . The definition of a circle , given by Euclid , is of this kind for all the properties of a circle follow as confequences from it . And here the reader is to be admonished , that ...
Seite 11
... called a point in respect of the Universe , " nór in the sense that the end of a tapering thing is called a point , as of a pin or needle ; though they seem to be the smallest things we know ; because these latter may be said to have as ...
... called a point in respect of the Universe , " nór in the sense that the end of a tapering thing is called a point , as of a pin or needle ; though they seem to be the smallest things we know ; because these latter may be said to have as ...
Seite 12
... called the terminus or bound , from which they all begin ; fo quantity may be said to begin from a point or nothing : number may be faid to begin from nought , cifer or zero : time may be " faid to begin from never and motion to begin ...
... called the terminus or bound , from which they all begin ; fo quantity may be said to begin from a point or nothing : number may be faid to begin from nought , cifer or zero : time may be " faid to begin from never and motion to begin ...
Seite 13
... called a furface ; which must be confidered as having only length and breadth ; because if it had thickness alfo ; then it would not be the boundary of the folid , but a part of the folid itself . There- fore the proper definition of a ...
... called a furface ; which must be confidered as having only length and breadth ; because if it had thickness alfo ; then it would not be the boundary of the folid , but a part of the folid itself . There- fore the proper definition of a ...
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The Elements of Euclid: With Dissertations Intended to Assist and Encourage ... James Williamson,James Euclid Keine Leseprobe verfügbar - 2016 |
Häufige Begriffe und Wortgruppen
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
Beliebte Passagen
Seite 3 - Let it be granted that a straight line may be drawn from any one point to any other point.
Seite 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...
Seite 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.
Seite 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.
Seite 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.
Seite 86 - When you have proved that the three angles of every triangle are equal to two right angles...
Seite 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.
Seite 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.
Seite 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.
Seite 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...