 | John Bonnycastle - 1842 - 318 頁
...quadrilateral, whose sides are ill equal, but its angles not right angles.* 35. Parallel right line* are such as are in the same plane, and which being produced ever so far both ways, do not meet. 36. A parallelogram is a quadrilateral whose opposite sides are parallel. / 7 » ThU figure, by working... | |
 | William Pease - 1843 - 80 頁
...angles at the extremities of each of its parallel sides equal, or all its angles may be unequal. XXXV. Parallel straight lines are such as are in the same...being produced ever so far both ways, do not meet. Curved lines are also parallel, when in the same plane, and kept at a given radiating distance throughout.... | |
 | Philip Kelland - 1843 - 168 頁
...parallelograms, which Euclid could not do, inasmuch as he had not laid down the doctrine of parallels. 32. Parallel straight lines are such as are in the same plane, and being produced ever so far, do not meet. Or thus : Parallel straight lines are such as are in the same... | |
 | Euclid - 1845 - 218 頁
...angles right angles. xxxiy. All other four-sided figures besides these, are called Trapeziums. XXXV. Parallel straight lines, are such as are in the same...being produced ever so far both ways, do not meet. POSTULATES. I. Let it be granted that a straight line may be drawn from any one point to any other... | |
 | Euclides, James Thomson - 1845 - 382 頁
...An acute angle is that which is less than a right angle. 11. Parallel straight lines are those which are in the same plane, and which, being produced ~~~ ever so far both ways, do not meet. 12. Afyurt is that which is enclosed by one or more boundaries. 13. Rectilineal or rectilinear figures... | |
 | Euclides - 1845 - 546 頁
...angles right angles. XXXIV. All other four-sided figures besides these, are called Trapeziums. XXXV. Parallel straight lines are such as are in the same plane, and whic being produced ever so far both ways, do not meet. A. A parallelogram is a four-sided figure,... | |
 | Euclid, John Playfair - 1846 - 334 頁
...its angles right angles. 29. All other four sided figures besides these, are called trapeziums. 30. Parallel straight lines are such as are in the same...being produced ever so far both ways, do not meet. POSTULATES. 1. LET it be granted that a straight line may be drawn from any one point to any other... | |
 | Great Britain. Admiralty - 1846 - 128 頁
...angles right angles. XXXIV. All other four-sided figures, besides these, are called trapeziums. XXXV. Parallel straight lines are such as are in the same...being produced ever so far both ways, do not meet. POSTULATES. I. Let it be granted, that a straight line may be drawn from any one point to any other... | |
 | Euclides - 1847 - 128 頁
...four-sided figures besides these, are called Trapeziums. Trapezium is a Greek word, signifying a table. 34. Parallel straight lines are such as are in the same...being produced ever so far both ways, do not meet. POSTULATES. Let it be granted, 1. That a straight line may be drawn from any one point to any other... | |
 | Euclides - 1848 - 52 頁
...angles right angles. XXXIV. All other four-sided figures besides these, are called Trapeziums. XXXV. Parallel straight lines are such as are in the same...being produced ever so far both ways, do not meet. A. A parallelogram is a four-sided figure, of which the opposite sides are parallel : and the diameter... | |
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Parallel straight lines are such as are in the same plane, and which being produced ever so far both ways, do not meet. 
