 | 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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An oblong is that which has all its angles right angles, but has not all its sides equal. 
