| Euclides - 1879 - 146 pages
...distinguish it from the other two, and the angular point opposite to that side is called the vertex^ 30. **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 not all its sides equal. 32. A rhombus... | |
| Moffatt and Paige - 1879 - 426 pages
...obtuse angle. 29. An acute-angled triangle is that which has three acute angles. 30. Of quadrilateral or **four-sided figures, a square is that which has all 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. A... | |
| Moffatt and Paige - 1879 - 378 pages
...through the centre, and terminated both ways by the circumference. (6) A sqnare is a four-sided figure, **which has all its sides equal, and all its angles right angles** (or, better, "one of its angles a right angle"). (c) The following are all the cases in the 1st Book:—... | |
| Isaac Sharpless - Geometry - 1879 - 282 pages
...equal, latus, a side. * Poly, many; gonia, an angle. * Isos, equal; ecelos, a leg. 23. A square is one **which has all its sides equal, and all its angles right angles.** 24. A rectangle 1 is one which has its opposite sides equal and all its angles right angles. 25. A... | |
| Isaac Todhunter - Euclid's Elements - 1880 - 426 pages
...angle : 29. An acute-angled triangle is that which has three acute angles. Of four-sided figures, 30. **A square is that which has all its sides equal, and all its angles right angles** : 31. An oblong is that which has all its angles right angles, but not all its sides equal : 32. A... | |
| Euclides - Euclid's Elements - 1881 - 236 pages
...that which has one angle a right angle and the sides which contain it equal to one another. XXXI. Ai\ **oblong is that which has all its angles right angles, but has not all its sides equal.** This definition is also redundant ; for m oblong [or rectangle, that is, a right-angled parallelogram]... | |
| Marianne Nops - 1882 - 278 pages
...diameter, or diagonal. Parallelograms are of four kinds, which are thus defined by Euclid : — 30. ' **A square is that which has all its sides equal and all its angles right angles.'** 31. ' An oblong, or rectangle, is that which has all its angles right angles, but not all its sides... | |
| Euclid, Isaac Todhunter - Euclid's Elements - 1883 - 426 pages
...angle : 29. An acute-angled triangle is that which has three acute angles. Of four-sided figures, 30. **A square is that which has all its sides equal, and all its angles right angles** : 31. An oblong is that which has all its angles right angles, but not all its sides equal : 33. A... | |
| Moffatt and Paige - 1883 - 576 pages
...is that which has three acute angles. 30. Of quadrilateral or four-sided figures, a square is tliat **which has all 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. A... | |
| Euclides - 1883 - 176 pages
...quadrilateral figure is a plane figure enclosed by four straight lines. 24. A square is a four-sided figure **which has all its sides equal and all its angles right angles.** It is sufficient, if all the sides are equal, to have one angle a right angle, as it may then be proved... | |
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