| Euclid - 1781 - 552 pages
...which has three acute angln. XXX. Of four fi Jed figures, a fquare is that which has all its fidet **equal, and all its angles right angles. XXXI. An oblong, is that which has** ail its angles right angles, bu: has not all its fides equal. XXXII. A rhombus, is that which has all... | |
| Proclus (Diadochus.) - 1788 - 350 pages
...replete with matter and material imperfection, DEFINITION XXX. Of Quadrilateral Figures, a QUADRANGLE or **SQUARE is that which has all its Sides equal, and all its Angles Right Angles.** DEFINITION XXXI. i An OBLONC is that which has all its Angles right Angles, but has not all its Skies... | |
| Robert Simson - Trigonometry - 1806 - 546 pages
...that 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...sides equal, and all its angles right angles. XXXI.** Aii oblong is that which has all its angles right angles, but has not all its sides equal. XXXII. A... | |
| John Playfair - Mathematics - 1806 - 320 pages
...obtuse angle. _ XXIV. _ Book I. An acute angled triangle is that which has three acute angles, i XXV. **Of four sided figures, a square is that which has...its sides equal, and all its angles right angles.** XXVI. An oblong is that which has all its angles right angles, but has not all its sides equal. XXVII.... | |
| John Mason Good - 1813 - 714 pages
...angled triangle, is that which ha* three arute angles. ” ' 50. Of four sided figures, asqnnre isthat **which has all its sides equal, and all its angles right angles.** 51. An oblong, is that which has all its angles right angles, Lu' has not all its sides equal. 32.... | |
| Euclides - 1814 - 560 pages
...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 all its sides equal, and all its angles right angles. XXXI.** v An oblong, is that which has all its angles right angles, but has not all its sides equal. XXXII.... | |
| John Playfair - Circle-squaring - 1819 - 350 pages
...which has an obtuse angle. XXIV. An acute angled triangle, is that which has three acute angles. XXV. **Of four sided figures, a square is that which has...its sides equal, and all its angles right angles.** y . XXVI. An oblong, is that which hat all its angles right angles, but has not all its sides equal.... | |
| Euclid - 1822 - 222 pages
...quadrilateral figure, Fig. \\. whose opposite sides are parallel. 31. A square is a quadrilateral figure, **which has all its sides equal, and all its angles right angles.** 32. Rectilineal figures, which have more than four sides, are called polygons. Postulates. 1 . Let... | |
| 1854 - 1112 pages
...manifest that this in any rectilineal figure is equal to the number of sides. Def. 31. A regular polygon **is that which has all its sides equal, and all its angles** equal. Def. 32. A circk la a plane figure, bounded by a single curve line, called its circumference,... | |
| George Crabb - Industrial arts - 1823 - 704 pages
...sides. The principal of these figures are as follow : namely — The square, ie a foursided figure, **which has all its sides equal, and all its angles right angles,** as ABCD, fig. 13. — An oblong square, a figure having all its angles right angles, but not all its... | |
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