Solid and Spherical Geometry and Conic Sections: Being a Treatise on the Higher Branches of Synthetical Geometry, Containing the Solid and Spherical Geometry of Playfair ... |
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Side 66
The straight lines AD and EC are parallel ; for , if a great circle bisect the angle at
G B , it also bisects the arcs AD , EC , and is perpendicular to their planes ;
therefore the cords AD , EC , are perpendicular to the lines of common section ,
and ...
The straight lines AD and EC are parallel ; for , if a great circle bisect the angle at
G B , it also bisects the arcs AD , EC , and is perpendicular to their planes ;
therefore the cords AD , EC , are perpendicular to the lines of common section ,
and ...
Side 67
Let ABC be the triangle , BD B = BA , BE = BC , and BFG bisecting the vertical
angle ; and AD , DU EČ , drawn as in the preceding figure ; then BFG bisects AD ,
EC , and cuts them at right angles , for it passes through their pole . In the right ...
Let ABC be the triangle , BD B = BA , BE = BC , and BFG bisecting the vertical
angle ; and AD , DU EČ , drawn as in the preceding figure ; then BFG bisects AD ,
EC , and cuts them at right angles , for it passes through their pole . In the right ...
Side 84
The distances of either projected pole from the centres of the primitive and
projected great circle , are directly proportional to the radii of these circles . For
AP bisects the angle EAH ( Pr . I . 4 , Cor . 3 ) , and consequently AQ bisects the
external ...
The distances of either projected pole from the centres of the primitive and
projected great circle , are directly proportional to the radii of these circles . For
AP bisects the angle EAH ( Pr . I . 4 , Cor . 3 ) , and consequently AQ bisects the
external ...
Side 111
sects the vertical angle of the isosceles triangle GDF , it will also bisect the base
DF at right angles ( Pl . Ge . ... If a straight line be drawn from the focus , to any
point in the directrix , the perpendicular which bisects it will touch the parabola ...
sects the vertical angle of the isosceles triangle GDF , it will also bisect the base
DF at right angles ( Pl . Ge . ... If a straight line be drawn from the focus , to any
point in the directrix , the perpendicular which bisects it will touch the parabola ...
Side 112
37 ) , and therefore AĞ passes through its centre ; but HL , which bisects the cord
FK , at right angles , also passes through its centre ( Pl . Ge . III . 3 ) ;
consequently G is the centre of the circle AKF . Whence GA = GF , and G a point
in the ...
37 ) , and therefore AĞ passes through its centre ; but HL , which bisects the cord
FK , at right angles , also passes through its centre ( Pl . Ge . III . 3 ) ;
consequently G is the centre of the circle AKF . Whence GA = GF , and G a point
in the ...
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Solid and Spherical Geometry and Conic Sections: Being a Treatise on the ... A. Bell Uten tilgangsbegrensning - 1837 |
Solid and Spherical Geometry and Conic Sections: Being a Treatise on the ... William Chambers,Robert Chambers,A Bell Ingen forhåndsvisning tilgjengelig - 2018 |
Solid and Spherical Geometry and Conic Sections: Being a Treatise on the ... William Chambers,Robert Chambers,A Bell Ingen forhåndsvisning tilgjengelig - 2015 |
Vanlige uttrykk og setninger
ABCD affection altitude angle ABC axis base bisects called centre circle common section cone conjugate consequently contained cord cosine curve cylinder described diameter difference distance divided draw drawn ellipse equal extremities fall figure foci focus fore given given point greater half Hence hyperbola inclination intercepted intersection join less line be drawn lines drawn manner measure meet namely opposite ordinate parabola parallel parallelogram pass perpendicular perspective plane point of contact pole primitive prism produced projection proportional PROPOSITION proved pyramid quadrant radius ratio reason rectangle right angles segments semi-ordinate sides similar sine small circle solid sphere spherical triangle square straight line surface tangent THEOREM third transverse triangle vertex vertical
Populære avsnitt
Side 50 - 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.
Side 15 - A cone is a solid figure described by the revolution of a right-angled triangle about one of the sides containing the right angle, which side remains fixed.
Side 25 - LR, the base of which is the parallelogram LQ, and of which LM is one of its insisting straight lines : therefore, because the parallelogram AB is equal to CD, as the base AB is to the base LQ, so is (7.
Side 17 - DAB, which contain the solid angle at A, are less than four right angles. Next, let the solid angle at A be contained by any number of plane angles BAC, CAD, DAE, EAF, FAB. These shall together be less than four right angles.
Side 27 - FC, as the solid HD to the solid DC. But the base HF is equal to the base AE, and the solid GK to the solid AB ; therefore, as the base AE to the base CF, so is the solid AB to the solid CD.
Side 53 - EM (2.) are ^quadrants, and FL, EM together, that is, FE and ML together, are equal to a semicircle. But since A is the pole of ML, ML is the measure of the angle BAC (3.), consequently FE is the supplement of the measure of the angle BAC.
Side 19 - And AB is parallel to CD ; therefore AC is a parallelogram. In like manner, it may be proved, that each of the figures CE, FG, GB, BF, AE is a parallelogram: Join AH, DF; and...
Side 5 - If two straight lines be at right angles to the same plane, they shall be parallel to one another. Let the straight lines AB, CD be at right angles to the same plane.
Side 9 - CA is at right angles to the given plane, it makes right angles with every straight line meeting it in that plane. But DAE, which is in that plane, meets CA : therefore CAE is a right angle. For the same reason BAE is a right angle. Wherefore the angle CAE is equal to the angle BAE ; and they are in one plane, which is impossible. Also, from a point above a plane, there can be but one perpendicular to that plane ; for if there could be two, they would be parallel (6.
Side 1 - The inclination of a straight line to a plane is the acute angle contained by that straight line, and another drawn from the point in which the first line meets the plane, to the point in which...
Bibliografisk informasjon
| Tittel | Solid and Spherical Geometry and Conic Sections: Being a Treatise on the Higher Branches of Synthetical Geometry, Containing the Solid and Spherical Geometry of Playfair ... Chambers's educational course Chambers's educational course,--ed. by W. and R. Chambers |
| Forfatter | A. Bell |
| Utgiver | William and Robert Chambers and sold by all booksellers, 1837 |
| Original fra | Oxford University |
| Digitalisert | 4. des 2006 |
| Lengde | 164 sider |
| Eksporter sitat | BiBTeX EndNote RefMan |