| Robert Simson - 1827 - 513 páginas
...angled triangle, is that which has three acute angles. xxx. Of four-sided figures, a square is that **which has all its sides equal, and all its angles right angles.** XXXI. An oblong is that which has all its angles right angles, but has not all its sides equal. XXXII.... | |
| Thomas Cogswell Upham - 1831
...or 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... | |
| Euclid, Thomas Elrington - 1833 - 183 páginas
...lines. 30. A parallelogram is a quadrilateral figure, whose Fig. 1 '. opposite sides are parallel. 81. **A square is a quadrilateral figure, which has all...than four sides, are called polygons. POSTULATES,** Let it be granted, 1. That a right line may be drawn from any one point to any other. 2. That a terminated... | |
| Charles Bonnycastle - 1834 - 631 páginas
...equal, the fourth side will be equal to either of the others. A quadrilateral of this kind, namely, **which has all its sides equal, and all its angles right angles,** is called a square. Part I. art. 13. 69. 5. As these lines M and N appear, from the last remark, to... | |
| Euclid - 1835 - 513 páginas
...angled triangle is that which has three acute angles. XXX. Of four sided figures, a square is that **which has all its sides equal, and all its angles right angles.** XXXI. An oblong is that which has all its angles right angles, but has not all its sides equal. XXXII.... | |
| George Darley - 1836 - 128 páginas
...also one or both of the sides AD, CD. NOTE N. The common definition of a square is—" a four-sided **figure, which has all its sides equal, and all its angles right angles."** But this definition is in part superfluous; for if but one of the angles be a right angle, it will... | |
| 1836 - 472 páginas
...angled triangle, is that which 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.... | |
| Euclid - 1837 - 390 páginas
...definitions of the square and rhombus which are given in Simeon's edition : " A square is a four-sided **figure which has all its sides equal, and all its angles right angles.** " A rhombus is a four-sided figure which has all its sides equal ; but its angles are not right angles."... | |
| Andrew Bell - 1837 - 240 páginas
...obtuse-angled triangle is that which has an obtuse angle. _____ 29. Of four-sided figures, a square is that **which has all its sides equal, and all its angles right angles.** 30. An oblong or rectangle is that which has all its angles right angles, but has not all its sides... | |
| Euclides - 1838
...an obtuse angle, . - \ al, its angles must be acute. XXVI. Of four-sided figures, a square is that **which has all its sides equal, and all its angles right angles.** This definition has been long known to be objectionable on the ground of its redundancy. More is said... | |
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