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" Of four-sided figures, a SQUARE is that which has all its sides equal, and all its angles right angles. "
A course of practical geometry for mechanics - Page 13
by William Pease - 1843 - 68 pages
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The First Six Books: Together with the Eleventh and Twelfth

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...
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The philosophical and mathematical commentaries of Proclus ... on the first ...

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...
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The Elements of Euclid: The Errors, by which Theon, Or Others, Have Long Ago ...

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...
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Elements of Geometry: Containing the First Six Books of Euclid, with 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....
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Pantologia. A new (cabinet) cyclopędia, by J.M. Good, O. Gregory ..., Volume 5

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....
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The Elements of Euclid; viz. the first six books, together with the eleventh ...

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....
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Elements of Geometry: Containing the First Six Books of Euclid, with a ...

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....
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The First Six Books with Notes

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...
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The Youth's instructer [sic] and guardian, Volume 14

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,...
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Universal Technological Dictionary: Or, Familiar Explanations of ..., Volume 2

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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