| Euclides - 1842 - 316 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.... | |
| John Playfair - Euclid's Elements - 1842 - 332 pages
...obtuse angle. 24. An acute angled triangle is that whick has three acute angles. 25. Of four sided **figures, a square is that which has all its sides equal and all its angles right angles.** 26. An oblong is that which has all its angles right angles, but has not all its sides equal. 27. A... | |
| William Pease - Geometry - 1843 - 80 pages
...which has an obtuse angle. The two remaining angles will necessarily be acute. XXX. Of four -sided **figures, a square is that which has all its sides...angles right angles, but has not all its sides equal.** Its opposite sides are necessarily equal. XXXII. A rhombus is that which has all its sides equal, but... | |
| Philip Kelland - Algebra - 1843 - 168 pages
...figures as contain more sides than angles, such as A., which are called by Zenodorus * In Def. 27. **Of four-sided figures a square is that which has all its sides equal, and** one of its angles a right angle. It has been properly objected to some of Euclid's definitions, that... | |
| Euclides - 1845 - 546 pages
...triangle is that which has three acute angles. XXX. Of quadrilateral or four-sided figures, a square **has all its sides equal and all its angles right angles....angles right angles, but has not all its sides equal.** XXXII. A rhombus has all its sides equal, but its angles are not right angles. XXXIII. A rhomboid has... | |
| Euclid - Geometry - 1845 - 218 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.** XXXII. A rhombus, is that which has all its sides equal, but its angles are not right angles. XXX1I1.... | |
| Scottish school-book assoc - 1845 - 444 pages
...which has one obtuse angle. 31. An acute angled triangle has all its angles acute. 32. Of four- sided **figures, a square is that which has all its sides equal, and all its angles right angles.** 33. A rectangle is that which has all its angles right angles, but all its sides are not equal. 34.... | |
| Euclides, James Thomson - Geometry - 1845 - 382 pages
...also are two angles which are together equal to two right angles. -, A square is a four-sided figure **which has all its sides equal and all its angles right angles.** " A rhombns is a four-sided figure which has all its sides equal ; but its angles are not right angles."... | |
| Euclides - 1846 - 292 pages
...: xxix. An acute-angled triangle is that which has three acute angles. Of four-sided figures, xxx. **A square is that which has all its sides equal, and...is that which has all its angles right angles, but** not all its sides equal : xxxn. A rhombus is that which has all its sides equal, but its angles are... | |
| Great Britain. Admiralty - Geometry - 1846 - 128 pages
...four-sided figures, a square is that which has all its angles right angles, and all its sides equal. **XXXI. An oblong is that which has all its 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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