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