| Andrew Bell - 1837 - 240 sider
...which has a right angle. 27. An obtuse-angled triangle is that which has an obtuse angle. _____ 29. **Of four-sided figures, a square is that which has...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... | |
| Euclid - 1837 - 390 sider
...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."... | |
| John Playfair - 1837 - 318 sider
...that which has all its sides equal and all its angles right angles. 26. An oblong is, that which hate **all its angles right angles, but has not all its sides equal.** / 28. A rhomboid, is that which has its opposite sides equal to one another, but all its sides are... | |
| Euclid - 1838 - 416 sider
...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, but its angles are not right angles.** A rhomboid, is that which has its opposite sides equal to one another, but all its sides are not equal,... | |
| Euclid - 1838 - 416 sider
...one another, which meet together, but are not in the same straight line. AD THE ELEMENTS OF EUCLID. **XXXI. An oblong, is that which has all its angles...sides equal, but its angles are not right angles.** xxxm. A rhomboid, is that which has its opposite sides equal to ono another, but all its sides are... | |
| Euclides - 1838
...triangle have neither a right angle, nor an obtuse angle, . - \ al, its angles must be acute. XXVI. **Of four-sided figures, a square is that which has...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... | |
| Thomas Cogswell Upham - 1839
...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 sides, but equality of angles. And it is... | |
| John Clark (drawing master.) - 1840
...cross another ; where they touch is the point of intersection. The Square — A square is a figure **which has all its sides equal, and all its angles right angles.** The drawing of this figure requires the base line to be given, D on which points A and B, perpendiculars,... | |
| Charles Davies - 1840 - 252 sider
...altitude. Thus, AC is the altitude. 14. There are several kinds of quadrilaterals. First. — The square, **which has all its sides equal, and all its angles right angles.** Of Plane Figures. Second. — The rectangle, which has its angles right angles, and its opposite sides... | |
| Euclides - 1841
...right angle. XXVIII. An obtuse angled triangle is that which .^ has an obtuse angle. — / XXIX. XXX. **Of four-sided figures, a square is that which has...and all its angles right angles. XXXI. An oblong,** or rectangle, is that which has all its angles right angles, but has not all its sides equal. XXXII.... | |
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