| 1854
...manifest that this in any rectilineal figure is equal to the number of sides. Def. 31. A regular polygon **is that which has all its sides equal, and all its angles** equal. Def. 32. A circk la a plane figure, bounded by a single curve line, called its circumference,... | |
| George Crabb - 1823
...sides. The principal of these figures are as follow : namely — The square, ie a foursided figure, **which has all its sides equal, and all its angles right angles,** as ABCD, fig. 13. — An oblong square, a figure having all its angles right angles, but not all its... | |
| Peter Nicholson - 1825 - 372 sider
...angle. ELEMENTS OF KL'CI.I.), 161 29. An acute-angled triangle ¡s that which has three acute anglesSO. **Of four-sided figures, a square is that which has...its sides equal, and all its angles right angles.** 31. An oblong, is that which has all its angles right angles, but has not all its sides equal. 32.... | |
| 1825
...mathematical figures, The mother draws quadilateral figures of four equal sides. A four-sided figure **which has all its sides equal, and all its angles right angles,** is called a square. Try whether the square I have drawn is correct. She makes three squares of equal,... | |
| George Lees - 1826 - 207 sider
...XXV.— An acute angled triangle, is that which has three acute angles. Book I. XXVI. — Of four sided **figures, a square is that which has all its sides equal, and all its angles right angles.** XXVII. — An oblong, is that which has all its angles right angles, but has not all its sides equal.... | |
| Euclid, John Playfair - 1826 - 320 sider
...that whieh has all its sides equal, and all its angles right angles. XXVI. An oblong, is that whieh **has all its angles right angles, but has not all Its sides equal.** XXVII. A rhombus, is that whieh has all its sides equal, but its angles are not right angles. XXVHI.... | |
| Robert Simson - 1827 - 513 sider
...an obtuse angle. A ^? A XXIX. An acute angled triangle, is that which has three acute angles. xxx. **Of four-sided figures, a square is that which has...its sides equal. XXXII. A rhombus, is that which has** all its sides equal, but its angles are not right angles. XXXIII. SeeN. A rhomboid, is that which has... | |
| John Playfair - 1829 - 186 sider
...quadrilateral figures, a square Is that which has one right angle, and all its sides equal. 34. A rectangle **is that which has all its angles right angles, but has not all its sides equal.** 35. A parallelog"am is that which has its two opposite sides parallel. 36. A trapezium is a four-sided... | |
| Pierce Morton - 1830 - 272 sider
...its sides equal and all its angles equal ; and, since there is evidently some greatest, the greatest **is that which has all its sides equal and all its angles** equal. PROP. 27. Spherical pyramids, which stand upon equal bases, are equal to one another; to, likewise,... | |
| Thomas Cogswell Upham - 1831
...brought out by a successive comparison of propositions. We say, for instance, that a square is a figure, **which has all its sides equal, and all its angles right angles.** In this definition, there is not only involved'equality of bides, but equality of angles. And it is... | |
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