 | Euclides - 1885 - 340 pages
...can be drawn between two points. The following illustration is due to Professor Henrici : — " If we suspend a weight by a string, the string becomes...simplest of all lines, which we call a straight line." THE PLANE. v. A surface is that which has length and hreadth. A surface is space of two dimensions.... | |
 | Euclid, John Casey - Euclid's Elements - 1885 - 340 pages
...can be drawn between two points. The following illustration is due to Professor Henrici : — ' ' If we suspend a weight by a string, the string becomes...simplest of all lines, which we call a straight line." THE PLANE. v. A surface is that which has length and breadth. A surface is space of two dimensions.... | |
 | Lewis Carroll - Geometry - 1885 - 318 pages
...after passing over a good deal about ' continuity' and 'space' and 'congruence.' We say (p. 17) ' If we suspend a weight by a string, the string becomes stretched ; and we say it is straight.' Min. That will serve very well to give a notion of ' straight.' For a working definition we require... | |
 | John William Hopkins, Patrick Healy Underwood - Arithmetic - 1903 - 560 pages
...illustration, taken from Professor Henrici, may serve to give a clear idea of a straight line : " If we suspend a weight by a string, the string becomes...we mean to express that it has assumed a peculiar shape. If we mentally abstract from this string all thickness, we obtain the notion of the simplest... | |
 | John William Hopkins, Patrick Healy Underwood - Arithmetic - 1903 - 578 pages
...becomes stretched, and we say it is straight, by which we mean to express that it has assumed a peculiar shape. If we mentally abstract from this string all...simplest of all lines, which we call a straight line." 178. The mutual inclination of two straight lines which proceed from the same point is called an angle.... | |
 | Lewis Carroll, Charles Lutwidge Dodgson - Mathematics - 2004 - 336 pages
...after passing over a good deal about ' continuity' and 'space' and 'congruence.' We say (p. 17) ' If we suspend a weight by a string, the string becomes stretched ; and we say it is straight.' Min. That will serve very well to give a notion of ' straight.' For a working definition we require... | |
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If we suspend a weight by a string, the string becomes stretched, and we say it is straight, by which we mean to express that it has assumed a peculiar definite shape. 