Elements of Geometry;: Containing the First Six Books of Euclid, with Two Books on the Geometry of Solids. To which are Added, Elements of Plane and Spherical TrigonometryBell & Bradfute, and G. G. & J. Robinson, London., 1795 - 400 sider |
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Resultat 1-5 av 87
Side vi
... and the force of the whole is fo clearly and di- rectly perceived , that I am perfuaded no more dif- ficulty will be found in understanding the pro- pofitions pofitions of the fifth Book , than of any other vi PREFACE .
... and the force of the whole is fo clearly and di- rectly perceived , that I am perfuaded no more dif- ficulty will be found in understanding the pro- pofitions pofitions of the fifth Book , than of any other vi PREFACE .
Side viii
... whole of the Elements , viz . That in the demonftration of a theorem he never fuppofes any thing to be done , as any line to be drawn , or any figure to be conftructed , the manner of do- ing which he has not previously explained . Now ...
... whole of the Elements , viz . That in the demonftration of a theorem he never fuppofes any thing to be done , as any line to be drawn , or any figure to be conftructed , the manner of do- ing which he has not previously explained . Now ...
Side 7
... whole is greater than its part . X. All right angles are equal to one another . XI . " Two ftraight lines cannot be drawn through the fame point , " parallel to the fame ftraight line , without coinciding with 66 one another . Book I ...
... whole is greater than its part . X. All right angles are equal to one another . XI . " Two ftraight lines cannot be drawn through the fame point , " parallel to the fame ftraight line , without coinciding with 66 one another . Book I ...
Side 10
... whole triangle ABC fhall coincide with the whole triangle DEF , and be equal to it ; and the remaining angles of the one shall coincide with the remaining angles of the other , and be equal to them , viz . the angle ABC to the angle DEF ...
... whole triangle ABC fhall coincide with the whole triangle DEF , and be equal to it ; and the remaining angles of the one shall coincide with the remaining angles of the other , and be equal to them , viz . the angle ABC to the angle DEF ...
Side 11
... whole AF is equal to the whole AG , and the part AB to the part AC ; the remainder BF shall be e- qual to the remainder CG ; and FC was proved to be equal c 3. Ax ...... . to ... whole Book I whole ACF , and the part CBG to OF GEOMETRY . II.
... whole AF is equal to the whole AG , and the part AB to the part AC ; the remainder BF shall be e- qual to the remainder CG ; and FC was proved to be equal c 3. Ax ...... . to ... whole Book I whole ACF , and the part CBG to OF GEOMETRY . II.
Andre utgaver - Vis alle
Elements of Geometry;: Containing the First Six Books of Euclid, with Two ... Euclid,John Playfair Uten tilgangsbegrensning - 1795 |
Elements of Geometry: Containing the First Six Books of Euclid, with a ... Formerly Chairman Department of Immunology John Playfair Ingen forhåndsvisning tilgjengelig - 2015 |
Elements of Geometry: Containing the First Six Books of Euclid, With Two ... Formerly Chairman Department of Immunology John Playfair,John Playfair Ingen forhåndsvisning tilgjengelig - 2017 |
Vanlige uttrykk og setninger
ABCD adjacent angles alfo alfo equal alſo angle ABC angle ACB angle BAC arch bafe baſe BC is equal becauſe the angle bifected Book VII cafe centre circle ABC circumference co-fine defcribed demonftrated diameter draw drawn equal angles equiangular equilateral equilateral polygon equimultiples Euclid exterior angle faid fame manner fame ratio fame reaſon fecond fection fegment femicircle fhewn fimilar fince firft firſt folid fore fquare of AC ftraight line AB fuch given ſtraight line greater impoffible infcribed interfection join lefs leſs Let ABC line BC magnitudes muſt oppofite angle parallel parallelepiped parallelogram perpendicular polygon prifm propofition proportionals radius rectangle contained rectilineal figure remaining angle right angles ſpace ſpherical triangle ſquare tangent thefe THEOR theſe thoſe touches the circle triangle ABC wherefore
Populære avsnitt
Side 18 - If two triangles have two angles of the one equal to two angles of the other, each to each, and one side equal to one side, viz. either the sides adjacent to the equal...
Side 155 - If two triangles have one angle of the one equal to one angle of the other and the sides about these equal angles proportional, the triangles are similar.
Side 17 - If, at a point in a straight line, two other straight lines upon the opposite sides of it, make the adjacent angles, together equal to two right angles, these two straight lines shall be in one and the same straight line.
Side 9 - Wherefore, from the given point A, a straight line AL has been drawn equal to the given straight line BC.
Side 3 - A circle is a plane figure contained by one line, which is called the circumference, and is such that all straight lines drawn from a certain point within the figure to the circumference, are equal to one another.
Side 23 - Therefore all the angles of the figure, together with four right angles, are equal to twice as many right angles as the figure has sides.
Side 12 - ABC: and it has also been proved that the angle FBC is equal to the angle GCB, which are the angles upon the other side of the base. Therefore the angles at the base, &c.
Side 6 - Let it be granted that a straight line may be drawn from any one point to any other point.
Side 156 - But by the hypothesis, it is less than a right angle ; which is absurd. Therefore the angles ABC, DEF are not unequal, that is, they are equal : And the angle at A is equal to the angle at D ; wherefore...
Side 44 - If a straight line be bisected, and produced to any point ; the rectangle contained by the whole line thus produced, and the part of it produced...