 | John Playfair - 1806 - 320 Seiten
...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 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.... | |
 | Euclid - 1810 - 554 Seiten
...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...which has all its angles right angles, but has not all Us sides equal. j\ j\ A, I 1 A rhombus, is that which has all its sides equal, but its angles are not... | |
 | 1811 - 600 Seiten
...to Euclid s definition.' ' The change in def. 30 of Dr. Simson and 26 of the Professor, " an oblong has all its angles right angles, but has not all its sides equal," is but an uncouth expression; at least, it U not preferable to Euclid's def. 31. And in the Doctor's... | |
 | Friedrich Christian Accum - 1813 - 488 Seiten
...equal to one another, and whose angles are right ones, as Fig. 2929 A rectangle is a parallelogram which has all its angles right angles, but has not all its sides equalr It is also called an oblong, being longer than broad. See Fig. 30. A rhombus, or lozenge, is... | |
 | John Mason Good - 1813 - 714 Seiten
...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 Seiten
...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, 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 - 1819 - 354 Seiten
...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 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... | |
 | John Playfair - 1819 - 350 Seiten
...which has all 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. XXVII. A rhombus, k that which ha» all its aides equal, but its angles are not right angles. XXVIH.... | |
 | Euclid, Robert Simson - 1821 - 514 Seiten
...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...its sides equal. XXXII. A rhombus, is that which has all its sides equal, but its angles are not right angles. XXXIII. „ . A rhomboid, is that which has... | |
 | Euclid - 1822 - 222 Seiten
...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... | |
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A rhomboid, is that which has its opposite sides equal to one another, but all its sides are not equal, nor its angles right angles. 
