Euclide's Elements: The Whole Fifteen Books Compendiously Demonstrated. With Archimedes Theorems of the Sphere and Cylinder, Investigated by the Method of IndivisiblesW. Redmayne, 1714 - 520 páginas |
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... fore I am not without good hopes that as to this part I bave in fome measure fatisfied both my own Intentions , and the Defire of the Studious . As for fome certain Problems and Theorems that are added in the Scholions ( or Short ...
... fore I am not without good hopes that as to this part I bave in fome measure fatisfied both my own Intentions , and the Defire of the Studious . As for fome certain Problems and Theorems that are added in the Scholions ( or Short ...
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... fore let what has been faid , touching the Intention and Method of this little Work , fuffice . As to the reft , whoever cavets to please himself with what may be faid , either in Praife of the Mathematicks in gene- ral , or of Geometry ...
... fore let what has been faid , touching the Intention and Method of this little Work , fuffice . As to the reft , whoever cavets to please himself with what may be faid , either in Praife of the Mathematicks in gene- ral , or of Geometry ...
Página 10
... fore AG ↳ — CĘ k — BC 1 = AG . Which was to be done . The putting of the point A within or without the line BC varies the cafes ; but the construction , and the demonftration , are every where alike . Schol . The line AG might be taken ...
... fore AG ↳ — CĘ k — BC 1 = AG . Which was to be done . The putting of the point A within or without the line BC varies the cafes ; but the construction , and the demonftration , are every where alike . Schol . The line AG might be taken ...
Página 13
... fore is the angle FUCd ACD , that is , the d 9. ax . angle FDCADC . Which is impoffible . 3. Cafe . If D falls without the triangle ACB , let CD be joined . ADC , and the e 5.1 . angle f 9. ax . BDC . Again the angle ACD e angle BCDe ...
... fore is the angle FUCd ACD , that is , the d 9. ax . angle FDCADC . Which is impoffible . 3. Cafe . If D falls without the triangle ACB , let CD be joined . ADC , and the e 5.1 . angle f 9. ax . BDC . Again the angle ACD e angle BCDe ...
Página 19
... fore is the angle ADB ABD ) . But ADB CC ; therefore is ABDC ; d there- с 1б . I. fore the whole angle ABCC . After the fame d 9. ax . manner , shall be ABC A. Which was to be dem . B A PROP . XIX . In every triangle ABC , under the ...
... fore is the angle ADB ABD ) . But ADB CC ; therefore is ABDC ; d there- с 1б . I. fore the whole angle ABCC . After the fame d 9. ax . manner , shall be ABC A. Which was to be dem . B A PROP . XIX . In every triangle ABC , under the ...
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Términos y frases comunes
ABC is given ABCD abfurd alfo given alſo altitude angle ABC angle BAC bafe baſe becauſe bifect circle commenfurable compounded Cone confequently conftr Coroll cube defcribed Demonftr diameter Dodecaedron drawn equilateral faid fame fecond feeing fegment fhall fide figure firft fome Forafmuch fore fphere fquare number fubtended fuch fuperficies fuppofed given by kind given by magnitude given by pofition given magnitude given reafon greater hath Icofaedron infcribed interfection leaft lefs likewife meaſure medial oppofite parallel parallelepipedon parallelogram pentagone perpendicular plane prifms PROP proportion pyramides rectangle refidual line right angles right line AB right line BC right line given Schol Scholium ſhall thefe thofe thoſe triangle ABC whence Wherefore whofe whole
Pasajes populares
Página 26 - 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.
Página 406 - ... which, when produced, the perpendicular falls, and the straight line intercepted, without the triangle, between the perpendicular and the obtuse angle. Let ABC be an obtuse-angled triangle, having the obtuse angle ACB, and from the point A let AD be drawn...
Página 269 - A fphere is a folid figure defcribed by the revolution of a i'emicircle about its diameter, which remains unmoved. XV. The axis of a fphere is the fixed ftraight line about which the femicircle revolves. XVI. The centre of a fphere is the fame with that of the femicircle. XVII. The diameter of a fphere is any ftraight line which pafles through the centre, and is terminated both ways by the fuperficies of the fphere.
Página 2 - The radius of a circle is a right line drawn from the centre to the circumference.
Página 1 - Bounds) of a Line, are Points. IV. A Right Line, is that which lietb evenly between its Points.
Página 269 - ... be less than the other side, an obtuse angled ; and if greater, an acute angled cone. XIX. The axis of a cone is the fixed straight line about which the triangle revolves. XX. The base of a cone is the circle described by that side containing the right angle which revolves. XXI. A cylinder is a solid figure described by the revolution of a right angled parallelogram about one of its sides which remains fixed.
Página 26 - ... the fum of the remaining angles of the one triangle equal to the fum of the remaining angles of the other. 3 . If one angle in a triangle be right, the other two are equal to a right-angle.
Página 76 - ... the angular points of the figure about which it is defcribed, each thro' each. III. A rectilineal figure is faid to be infcribed in a circle, when all the angles of the infcribed figure are upon the circumference of the circle.
Página 77 - ... touch the circumference of the circle. IV A right-lined figure is faid to be defcribed about a circle, when all the fides of the figure which is circumfcribed touch the periphery of the circle V.
Página 269 - Right Lines that touch one another, and are •not in the fame Superficies: Or, a folid Angle is that which is contained under more than two plane Angles which are not in the fame Superficies, but being all at one Point.