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" Of four-sided figures, a square is that which has all its sides equal, and all its angles right angles. "
Elementary Practical Mathematics - Page 228
by Frank Castle - 1899 - 404 pages
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The philosophical and mathematical commentaries of Proclus ... on the first ...

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

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

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....
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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 - 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....
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The complete measurer: or, The whole art of measuring, containing the ...

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

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...
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Hawney's Complete Measurer: Or, The Whole Art of Measuring: Being a Plain ...

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...
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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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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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