 | John Playfair - Euclid's Elements - 1842 - 332 pages
...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 may be drawA from any one point to any other... | |
 | Euclides - 1842 - 316 pages
...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 to one another is now called a trapezoid.... | |
 | William Pease - Geometry - 1843 - 80 pages
...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, and kept at a given radiating distance throughout.... | |
 | Euclid - Geometry - 1845 - 218 pages
...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 may be drawn from any one point to any other... | |
 | Euclid, James Thomson - Geometry - 1845 - 382 pages
...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... | |
 | Great Britain. Admiralty - Geometry - 1846 - 128 pages
...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 may be drawn from any one point to any other... | |
 | Euclid, John Playfair - Euclid's Elements - 1846 - 334 pages
...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 may be drawn from any one point to any other... | |
 | Euclides - 1847 - 128 pages
...these, are called Trapeziums. Trapezium is a Greek word, signifying a table. 34. Parallel straight lines are such as are in the same plane; and which,...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... | |
 | John Bonnycastle - Geometry - 1848 - 312 pages
...are all equal and its angles all right angles. 34. A rhombus is a quadrilateral, whose sides are al! equal, but its angles not right angles.* 35. Parallel...a quadrilateral whose opposite sides are parallel. 7 87. A rectangle is a parallelogram whose angles are all right angles. 28. A rhomboid is a parallelogram... | |
 | Charles Richson - 1848 - 98 pages
...extremities of the lower horizontal; — beginning on the left side. DEFINITION. — " Parallel straight lines are such as are in the same plane, and which...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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Parallel straight lines are such as are in the same plane, and which, being produced ever so far both ways, do not meet. 
