 | John Playfair - Euclid's Elements - 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 - 518 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 - 590 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 - 396 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 - 722 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 - 558 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 - 528 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 - 317 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... | |
 | Euclid, John Playfair - Circle-squaring - 1819 - 348 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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An oblong is that which has all its angles right angles, but has not all its sides equal. 
