| Euclid, Thomas Tate - 1849 - 120 pages
...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...angles right angles, but has not all its sides equal.** XXXII. A rhombus, is that which has all its sides equal, but its angles are not right angles. XXXIII.... | |
| Elias Loomis - Conic sections - 1849 - 252 pages
...quadrilaterals, a square is that which has all its sides equal, and its angles right angles. A rectangle **is that which has all its angles right [ angles, but has not all its sides equal.** A rhombus is that which has all its sides equal, but its angles are not right angles. A parallelogram... | |
| Minard Lafever - Architecture - 1849 - 306 pages
...equilateral rectangle is one that has all its sides equal. (Fig. 17.) xxv. An oblong rectangle, or an oblong, **has all its angles right angles, but has not all its sides equal.** (Fig. 18.) NOTE. — An oblong has its opposite sides equal. XXVI. A rhombus has its four sides equal,... | |
| Charles Davies - Geometry - 1850 - 218 pages
...altitude of BOOK I . Definitions. 48. There are several kinds of quadrilaterals. First. The square, **which has all its sides equal, and all its angles right angles.** Second. The rectangle, the opposite sides of which are parallel and its angles right angles. Third.... | |
| Charles Davies - Geometry - 1850 - 238 pages
...triangle ACB. 14 BOOK I. Definitions. 48. There are several kinds of quadrilaterals. First. The square, **which has all its sides equal, and all its angles right angles.** Second. The rectangle, the opposite sides of which are parallel and its angles right angles. Third.... | |
| Euclides - 1852 - 152 pages
...Fig, 2. is an isosceles acute angled triangle. Fig. 3. is an equilateral acute angled triangle.] XXX. **Of four,sided figures, a square is that which has...sides equal, and all its angles right angles. XXXI.** 1 An oblong is that which has all its angles right angles, but has not all its sides equal. XXXII.... | |
| Euclides - 1853 - 146 pages
...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...angles right angles, but has not all its sides equal.** XXXII. A rhombus is that which has all its sides equal, but its angles are not right angles. XXXIII.... | |
| Euclides - Geometry - 1853 - 176 pages
...Obtuse-angled. . Acute-angled. 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, and all its angles right angles.** Square. Oblong. XXXI. An oblong is that which has all its angles right angles, but has not all its... | |
| Royal Military Academy, Woolwich - Mathematics - 1853 - 400 pages
...that which has an obtuse angle. 29. An acute-angled triangle is that which has three acute angles. 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 has not all its sides equal. 32. A... | |
| Euclides - Geometry - 1853 - 334 pages
...of the three angles of which is an acute angle. XXX. A square is defined to be a four- sided figure **which has all its sides equal and all its angles right angles. XXXI. An oblong is** a four- sided figure which has all its angles right angles, but has not all its sides equal. XXXII.... | |
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