 | Robert Simson - Geometry - 1838 - 434 pages
...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 which being produced ever so far both ways, do not meet. POSTULATES. I. LET it be granted that a straight line... | |
 | Euclides - 1838 - 264 pages
...right angles. /_ f XXX. , All other four-sided figures besides these, are called Trape2iums. XXXI. Parallel straight lines are such as are in the same plane, and which, being produced ever so far both ways, do not meet. V POSTULATES. LET it be granted, that a straight line... | |
 | Euclides - Geometry - 1841 - 378 pages
...angles right angles. XXXIV. Any other four-sided figure, besides these, is called a trapezium. XXXV. Parallel straight lines are such as are in the same plane, and which, however far produced either way, do not meet. B 2 POSTULATES. I. Let it be granted, that a straight... | |
 | Euclides - 1842 - 316 pages
...sides equal to one another, but all its sides are not equal, nor its angles right angles. XXXIV. XXXV. Parallel straight lines are such as are in the same plane, and which, being produced ever so far both ways, do not meet. (A.) A trapezium having two, only, of its sides parallel... | |
 | John Playfair - Euclid's Elements - 1842 - 332 pages
...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 plane, and which, being produced ever so far both ways, do not meet. POSTULATES. 1. LET it be granted that a straight line... | |
 | William Pease - Geometry - 1843 - 80 pages
...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 plane, and which, being produced ever so far both ways, do not meet. Curved lines are also parallel, when in the same plane,... | |
 | Philip Kelland - Algebra - 1843 - 168 pages
...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 - Geometry - 1845 - 218 pages
...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 plane, and which, being produced ever so far both ways, do not meet. POSTULATES. I. Let it be granted that a straight line... | |
 | Euclides - 1845 - 546 pages
...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,... | |
 | Great Britain. Admiralty - Geometry - 1846 - 128 pages
...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 which being produced ever so far both ways, do not meet. POSTULATES. I. Let it be granted, that a straight line... | |
| |
Parallel straight lines are such as are in the same plane, and which being produced ever so far both ways, do not meet. 
