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" A plane superficies is that in which any two points being taken, the straight line between them lies wholly in that superficies. VIII. A plane angle is the inclination of two lines to one another in a plane, which meet together, but are not in the same... "
The elements of plane geometry; or, The first six books of Euclid, ed. by W ... - Σελίδα 3
των Euclides - 1863
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Geometry Without Axioms; Or the First Book of Euclid's Elements. With ...

Thomas Perronet Thompson - 1833 - 168 σελίδες
...straight line, on the whole being turned about the two centres of the spheres,will describe a surf ace in which any two points being taken, the straight line between them, with its jirolongation either way, may be proved to lie tvholly in that surface. A surface of this...

The Elements of Euclid; viz. the first six books, together with the eleventh ...

Euclides - 1834 - 518 σελίδες
...lies evenly between its extreme points. V. A superficies is that which hath only length and brendth. VI. The extremities of a superficies are lines. VII....plane superficies is that in which any two points be- Sw N. ing taken, the straight line between them lies wholly in that superficies. VIII. " A plane...

The Elements of Euclid: Viz. the First Six Books, Together with the Eleventh ...

Euclid - 1835 - 540 σελίδες
...which hath no mag- Book I. nitude. v^y^/ See Notes. II. A line is length without breadth. III. The extremities of a line are points. IV. A straight line...which lies evenly between its extreme points. V. A super/ides is that which hath only length and breadth. VI. The extremities of a superficies are lines....

The Elements of Euclid: viz. the first six books, together with the eleventh ...

Robert Simson - 1835 - 544 σελίδες
...straight line is that which lies evenly between its extreme points. V. A superficies is that which hath only length and breadth. VI. The extremities of a superficies are lines. VII. A plain superficies is that in which any two points being See N. taken, the straight line between them...

Library of Useful Knowledge: Mathematics I.

1836 - 352 σελίδες
...cannot be mistaken for one moment, unless it be by means of the attempt to explain them by saying that a straight line is ' that which lies evenly between its extreme points.' The line and surface are distinct species of magnitude, as much so as the yard and the acre. The first...

Library of Useful Knowledge: On the study and difficulties of mathematics ...

1836 - 530 σελίδες
...placed upon that surface, we conclude that the surface is plane. Hence the definition of a plane surface is that in which, any two points being taken, the straight line joining these points lies wholly upon the surface. Two straight lines have a relation to one another...

The First Six and the Eleventh and Twelfth Books of Euclid's Elements: With ...

Euclid, James Thomson - 1837 - 410 σελίδες
...one surface with another is also a line. 5. A plane surface, or, as it is generally called, a plane, is that in which any two points being taken, the straight line between them lies wholly in that surface..]Cor. Hence two plane surfaces cannot enclose a space. Neither can two plane surfaces have...

Euclid's Elements [book 1-6] with corrections, by J.R. Young

Euclides - 1838 - 264 σελίδες
...extremities of a line are points; and the intersection of one line with another is also a point. IB. A straight line is that which lies evenly between its extreme points. The idea of a geometrical straight line may be gained from that of a physical stretched line or thread....

The Elements of Euclid; viz. the first six books,together with the eleventh ...

Euclides - 1841 - 378 σελίδες
...magnitude. II. A line is length without breadth. III. The extremities of a line are points. IV. A straigU line is that which lies evenly between its extreme points. V. A superficies is that which hath only length and breadth. VI. The extremities of a superficies are lines. VII. A plane superficies...

Elements of geometry: consisting of the first four,and the sixth, books of ...

Euclides - 1842 - 316 σελίδες
...has no parts, or which has no magnitude. IL A line is that which has length without breadth. III. The extremities of a line are points. IV. A straight line...VI. The extremities of a superficies are lines. VII. VIII. " A plane angle is the inclination of two lines to one another " in a plane : the lines meeting,...




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