| John Playfair - Mathematics - 1806 - 320 pages
...XXIV. _ Book I. An acute angled triangle is that which has three acute angles, i XXV. Of four sided **figures, a square is that which has all its sides equal, and all its angles right angles.** XXVI. An oblong is that which has all its angles right angles, but has not all its sides equal. XXVII.... | |
| Euclid - Geometry - 1810 - 554 pages
...obtuse angle. XXIX. An acute-angled triangle, is that which has three acute angles. XXX. Of four sided **figures, a square is that which has all its sides...which has all its angles right angles, but has not all** Us sides equal. j\ j\ A, I 1 A rhombus, is that which has all its sides equal, but its angles are not... | |
| 1811 - 600 pages
...to Euclid s definition.' ' The change in def. 30 of Dr. Simson and 26 of the Professor, " an oblong **has all its angles right angles, but has not all its sides equal,"** is but an uncouth expression; at least, it U not preferable to Euclid's def. 31. And in the Doctor's... | |
| Friedrich Christian Accum - Crystallography - 1813 - 488 pages
...equal to one another, and whose angles are right ones, as Fig. 2929 A rectangle is a parallelogram **which has all its angles right angles, but has not all its sides** equalr It is also called an oblong, being longer than broad. See Fig. 30. A rhombus, or lozenge, is... | |
| John Mason Good - 1813 - 714 pages
...angled triangle, is that which ha* three arute angles. ” ' 50. Of four sided figures, asqnnre isthat **which has all its sides equal, and all its angles right angles.** 51. An oblong, is that which has all its angles right angles, Lu' has not all its sides equal. 32.... | |
| Euclides - 1814 - 560 pages
...which has an obtuse angle. XXIX. An acute angled triangle is that which has three acute angles. XXX. **Of four-sided figures, a square is that which has...sides equal, and all its angles right angles. XXXI.** v An oblong, is that which has all its angles right angles, but has not all its sides equal. XXXII.... | |
| Euclides - 1816 - 588 pages
...which has an obtuse angle. XXIX. Anacute angled triangle is that. which has three acute angles, XXX. T **Of four-sided figures, a square is that which has...angles right angles, but has not all its sides equal.** XXXII. A rhombus, is that which has its sides equal, but its angles are not right angles. XXX1II. .... | |
| John Playfair - 1819 - 354 pages
...obtuse angle. XXIV. An acute angled triangle, is that which has three acute angles. XXV. Of four sided **figures, a square is that which has all its sides equal, and all its angles right angles.** XXVI. An oblong, is that which has all its angles right angles, but has not all its sides equal. i... | |
| John Playfair - Circle-squaring - 1819 - 350 pages
...which has all its sides equal, and all its angles right angles. y . XXVI. An oblong, is that which hat **all its angles right angles, but has not all its sides equal.** XXVII. A rhombus, k that which ha» all its aides equal, but its angles are not right angles. XXVIH.... | |
| Euclid, Robert Simson - Geometry - 1821 - 514 pages
...which has an obtuse angle. XXIX. An acute-angled triangle, is that which has three acute angles. XXX. **Of four-sided figures, a square is that which has...angles right angles, but has not all its sides equal.** XXXII. A rhombus, is that which has all its sides equal, but its angles are not right angles. XXXIII.... | |
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