| Proclus (Diadochus.) - 1788 - 350 pages
...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... | |
| John Playfair - Mathematics - 1806 - 320 pages
...angled triangle is that which has three acute angles, i XXV. Of four sided figures, a square is that which has all 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.... | |
| Robert Simson - Trigonometry - 1806 - 546 pages
...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. Aii oblong is that which has all its angles right angles, but has not all its sides equal. XXXII.... | |
| 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 - 1816 - 588 pages
...angled triangle is that. which has three acute angles, XXX. T Of four-sided figures, a square is that which has all its sides equal, and all its angles right angles. XXXI. An oblong, is that which has all its angles right angles, but has not all its sides equal. XXXII.... | |
| Thomas Keith - 1817 - 306 pages
...Oblong, or rectangle, is a right •jigled parallelogram, whose length exceeds its breadth, as it. 29. A Rhombus is a parallelogram having all its sides equal, but its angles aie not right anglei, as I. 30. A Rhotnbaidrs is a parallelogram. having its opposite sides equal,... | |
| John Playfair - 1819 - 354 pages
...angled triangle, is that which has three acute angles. XXV. Of four sided figures, a square is that which has all 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. i... | |
| William Hawney - Geometry - 1820 - 336 pages
...angles, as G. 28. An oblong is a rectangled parallelogram, whose length exceeds its breadth, as H. 29. A rhombus is a parallelogram having all its sides equal, but its angles are not right angles, as 1. / I SO. A rhomboides is a parallelogram _•. having its opposite sides equal, but its /" ^ length... | |
| 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... | |
| 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... | |
| |