 | Euclides - 1864 - 262 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,... | |
 | Euclides - 1864 - 448 頁
...angles right angles. xxx1v. 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,... | |
 | Robert Potts - 1865 - 528 頁
...XXXIV. All other four-sided figures besides these, are called Trapeziums. XXXV. Parallel straight linos are such as are in the same plane, and which 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 a diameter,... | |
 | Edward Clarke Lowe - 1866 - 172 頁
...angles right angles. [ | 34. All other four- sided figures besides these, are called Trapeziums. 35. Parallel straight lines are such as are in the same...being produced ever so far both ways do not meet. 36. A parallelogram is a four-sided figure of which the opposite sides are parallel ; and the diagonal... | |
 | Euclid, Isaac Todhunter - 1867 - 426 頁
...its angles right angles : 34. All other four-sided figures besides these are called trapeziums. 35. Parallel straight lines are such . as are in the same...being produced ever so far both ways do not meet. \Note. The terms oblong and rhomboid are not often used. Practically the following definitions are... | |
 | Euclid, Isaac Todhunter - 1867 - 424 頁
...other four-sided figures besides these are called trapeziums. 35. Parallel straight lines are such _ as are in the same plane, and which being produced ever so far both ways — • do not meet. [Note. The terms oblong and rhomboid are not often used. Practically the following definitions are... | |
 | Robert Potts - 1868 - 434 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,... | |
 | Septimus Tebay - 1868 - 168 頁
...(ABCD). 22. The diagonal of a trapezium is the straight line which joins two opposite angles (AC). 23. Parallel straight lines are such as are in the same plane and being produced ever so far both ways do not meet. 24. A square is a four-sided figure having all its... | |
 | Isaac Todhunter - 1869 - 312 頁
...which is greater than a right angle. An acute angle is an angle which is less than a right angle. 9. Parallel straight lines are such as are in the same...being produced ever so far both ways do not meet. 10. A rectilineal figure is a figure which is bounded by straight lines; the boundaries of the figure... | |
 | Euclides - 1870 - 270 頁
...seen by all his guests. 35. Parallel straight lines (paralleelos, placed along opposite to each other) are such as are in the same plane, and which being produced ever so far both ways, do not meet; as st. lines AB, CD. The least objectionable of the many definitions proposed, from which we may reason... | |
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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. 
