| John Bonnycastle - 1842 - 288 Seiten
...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 - 68 Seiten
...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 - 147 Seiten
...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... | |
| Robert Simson - 1845 - 199 Seiten
...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... | |
| James Thomson - 1845 - 358 Seiten
...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... | |
| Robert Potts - 1845
...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,... | |
| 1846
...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... | |
| John Playfair - 1846 - 317 Seiten
...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... | |
| Euclides - 1847
...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... | |
| Charles Richson - 1848
...to touch the extremities of the lower horizontal; — beginning on the left side. DEFINITION. — " **Parallel straight lines are such as are in the same...being produced ever so far both ways, do not meet."** EXERCTSES. — 1. Draw the above figure in various sizes. 2. Two isoceles triangles are here formed;... | |
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