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 páginas |
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Página xii
... terminate at that point . See Note . VIII . Anything that has boundaries which are fixed , is called a figure . Figures are solid , superficial , or linear , according as the subject is a solid , surface , or line . To which may ...
... terminate at that point . See Note . VIII . Anything that has boundaries which are fixed , is called a figure . Figures are solid , superficial , or linear , according as the subject is a solid , surface , or line . To which may ...
Página 26
... terminated both ways by the surface , is called a diameter of the sphere . COR . A straight line may be described or made to pass from any one point to any other point . For it may be done by Prop . IX . above . PROPOSITION X. THEOREM ...
... terminated both ways by the surface , is called a diameter of the sphere . COR . A straight line may be described or made to pass from any one point to any other point . For it may be done by Prop . IX . above . PROPOSITION X. THEOREM ...
Página 35
... and some other point in CD with some other point in BF ; whereupon ( by Cor . 1 above ) AD will be one straight line ; and it is the sum of AB and CD . A COR . 6. A terminated straight line may be prolonged D2 PROP . XII . 35 Cor. 2. ...
... and some other point in CD with some other point in BF ; whereupon ( by Cor . 1 above ) AD will be one straight line ; and it is the sum of AB and CD . A COR . 6. A terminated straight line may be prolonged D2 PROP . XII . 35 Cor. 2. ...
Página 36
... terminated straight line may be prolonged to any length in a straight line . For ( by Cor . 5 above ) it may be multiplied [ that is to say , straight lines equal to it may be added one to another ] any number of times , and the whole ...
... terminated straight line may be prolonged to any length in a straight line . For ( by Cor . 5 above ) it may be multiplied [ that is to say , straight lines equal to it may be added one to another ] any number of times , and the whole ...
Página 43
... terminated both ways by the circumference , is called a diameter of the circle . B When a circle is said to be described about the centre A with the radius AB , the meaning is , that it is described by the revolution of the given ...
... terminated both ways by the circumference , is called a diameter of the circle . B When a circle is said to be described about the centre A with the radius AB , the meaning is , that it is described by the revolution of the given ...
Otras ediciones - Ver todas
Geometry Without Axioms; Or the First Book of Euclid's Elements. with ... Thomas Perronet Thompson Sin vista previa disponible - 2015 |
Términos y frases comunes
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
Pasajes populares
Página 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.
Página 109 - PARALLELOGRAMS upon the same base, and between the same parallels, are equal to one another...
Página 111 - Parallelograms upon the same base and between the same parallels, are equal to one another.
Página 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.
Página 72 - Any two sides of a triangle are together greater than the third side.
Página 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.
Página 103 - ... twice as many right angles as the figure has sides.
Página 70 - Any two angles of a triangle are together less than two right angles.
Página 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.
Página 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.