Geometry Without Axioms; Or the First Book of Euclid's Elements. With Alterations and Familiar Notes; and an Intercalary Book in which the Straight Line and Plane are Derived from Properties of the Sphere ...: To which is Added an Appendix ...Robert Heward, 1833 - 150 Seiten |
Im Buch
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Seite vi
... described , all the points in whose surface shall be equidistant from a given point within ; such a solid is called a sphere . A sphere may be turned in any manner whatsoever about its centre , without change of place . Consequences ...
... described , all the points in whose surface shall be equidistant from a given point within ; such a solid is called a sphere . A sphere may be turned in any manner whatsoever about its centre , without change of place . Consequences ...
Seite 14
... described the solid required . For , the point B remaining at rest , the point A can * be applied to every point in the line AC , in any of its situations . Also every point in the surface of the described solid , hast had some point in ...
... described the solid required . For , the point B remaining at rest , the point A can * be applied to every point in the line AC , in any of its situations . Also every point in the surface of the described solid , hast had some point in ...
Seite 21
... described about A , take any point as C ; and about C as a centre , with a central dis- INTERC.3 . tance equal to CA , describe ‡ another sphere . Because the Cor . 2 . C B D .D central distance of this sphere is equal to CA , A will be ...
... described about A , take any point as C ; and about C as a centre , with a central dis- INTERC.3 . tance equal to CA , describe ‡ another sphere . Because the Cor . 2 . C B D .D central distance of this sphere is equal to CA , A will be ...
Seite 22
... described sphere will be found in the surface of the sphere whose centre is A ; for if not , their central distances would not be equal . Let it be found then in E. But because B is in the surface of the sphere whose centre is C , and ...
... described sphere will be found in the surface of the sphere whose centre is A ; for if not , their central distances would not be equal . Let it be found then in E. But because B is in the surface of the sphere whose centre is C , and ...
Seite 23
... described by the point A from A to C , be afterwards turned about B in various * INTERC . 3. directions as called for , till a sphere is described * with a central distance equal to BA . In the surface of the sphere A , in that portion ...
... described by the point A from A to C , be afterwards turned about B in various * INTERC . 3. directions as called for , till a sphere is described * with a central distance equal to BA . In the surface of the sphere A , in that portion ...
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Geometry Without Axioms; Or the First Book of Euclid's Elements. with ... Thomas Perronet Thompson Keine Leseprobe verfügbar - 2015 |
Häufige Begriffe und Wortgruppen
ABCD adjacent angles alternate angles angle ABC angle ACB angle BAC angular points assigned point Axiom axis base BC bisected called CEGDHF central distances change of place circle coincide throughout Constr demonstrated double equal angles equal straight lines equal to AC equal to EF equilateral triangle Euclid exterior angle extremities four right angles Geometry given straight line greater half the angle hard body inclose a space instance INTERC Intercalary Book ist equal join line AC magnitude manner meet opposite angles parallelogram parity of reasoning pass perpendicular prolonged Prop PROPOSITION proved quadrilateral radii radius rectilinear figure remain unmoved remaining angle remains at rest respectively SCHOLIUM self-rejoining line shown side BC side opposite situation sphere whose centre straight line BC tessera THEOREM.-If third side triangle ABC turned unlimited length Wherefore
Beliebte Passagen
Seite 51 - When a straight line standing on another straight line makes the adjacent angles equal to one another, each of the angles is called a right angle ; and the straight line which stands on the other is called a perpendicular to it.
Seite 109 - PARALLELOGRAMS upon the same base, and between the same parallels, are equal to one another...
Seite 111 - Parallelograms upon the same base and between the same parallels, are equal to one another.
Seite 120 - If the square described on one of the sides of a triangle be equal to the squares described on the other two sides of it, the angle contained by these two sides is a right angle.
Seite 72 - Any two sides of a triangle are together greater than the third side.
Seite 55 - From the greater of two given straight lines to cut off a part equal to the less. Let AB and C be the two given straight lines, whereof AB is the greater.
Seite 103 - ... twice as many right angles as the figure has sides.
Seite 70 - Any two angles of a triangle are together less than two right angles.
Seite 138 - ... the exterior angle equal to the interior and opposite on the same side of the line ; and likewise the two interior angles on the same side of the line together equal to two right angles.
Seite 106 - THE straight lines which join the extremities of two equal and parallel straight lines, towards the same parts, are also themselves equal and parallel.