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" Hexagon, of six sides; a Heptagon, seven; an Octagon, eight; a Nonagon, nine ; a Decagon, ten ; an Undecagon, eleven ; and a Dodecagon, twelve sides. "
A course of geometrical drawing - Page 4
by William Schofield Binns - 1861
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A Treatise on Mensuration, Both in Theory and Practice

Charles Hutton - Measurement - 1788 - 728 pages
...41. A pentagon is a polygon of five fides; a hexagon has fix fides ; a heptagon, feven ; an oftagon, eight; a nonagon, nine; a decagon, ten; an undecagon, eleven ; and a dodecagon has twelve fides. 42. A regular polygon has all its fides and all its angles equal. — If they are...
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Mathematics: Compiled from the Best Authors and Intended to be the ..., Volume 1

Mathematics - 1801 - 426 pages
...number of their sides or angles. 41. A pentagon is a polygon of five sides ; a txteagen has six sides ; a heptagon, seven ; an octagon, eight ; a nonagon, nine ; a decagon, ten ; an widecagon, eleven ; and a dodecagon, twelve. 42. A regular polygon has all its sides and all its angles...
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Mathematics: Compiled from the Best Authors, and Intended to be ..., Volume 1

Samuel Webber - Mathematics - 1808 - 470 pages
...number of their sides or angles. 41. A pentagon is a polygon of five sides ; a hexagon has six sides ; a heptagon, seven ; an octagon, eight ; a nonagon,...; an undecagon, eleven ; and a dodecagon, twelve. 42. A regular polygon has all its sides and all its angles equal. — If they be not both equal, the...
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The carpenter's new guide

Peter Nicholson - 1808 - 258 pages
...angles. 39. A pentagon is a polygon of five ▀des, a hexagon has▀r▀des, a heptagonfeven, an oragon eight, a nonagon nine, a decagon ten, an undecagon eleven, and a dodecagon twelve ▀des. 40. A regular polygon has all its ▀des and its angles equal; and if they are not tqual, the...
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The principles of architecture, Volume 1

Peter Nicholson - 1809 - 426 pages
...number of their sides or angles. SQ. A pentagon is a polygon of five sides, a hexagon hath six aides, a heptagon seven, an octagon eight, a nonagon nine,...an undecagon eleven, and a dodecagon twelve sides. 40. A regular polygon hath all its sides and angles equal ; and if they are not equal, the polygon...
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A Course of Mathematics ...: Composed for the Use of the Royal Military ...

Charles Hutton - Mathematics - 1811
...of their sides or angles. Thus, 41. A Pentagon is a polygon of five sides; a Hexagon, of six sides ; a Heptagon, seven ; an Octagon, eight ; a Nonagon,...Undecagon, eleven ; and a Dodecagon, twelve sides. 42. A Regular Polygon has all its sides and all its angle* equol. — If they are not both equal, the...
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The complete measurer: or, The whole art of measuring, containing the ...

Thomas Keith - 1817 - 304 pages
...the number of their sides. Thus, a Pentagon, is a polygon of five sides; a Hexagon, has six sides; a Heptagon, seven; an Octagon, eight; a Nonagon, nine; a Decagon, ten; an Undecagun, eleven; and a Duodecasron, has twelve sides. If all the sides and angles are equal, they...
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A Course of Mathematics: In Two Volumes. For the Use of Academies ..., Volume 1

Charles Hutton - Mathematics - 1818 - 646 pages
...their sides or angles, Thus, 41. A Pentagon is a polygon of five sides : a Hexagon, of six sides ; a Heptagon, seven ; an Octagon, eight ; a Nonagon,...Undecagon, eleven ; and a Dodecagon, twelve sides. 42. A Regular Polygon has all its sides and all its angles equal. — lf they are not both equal, the...
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A Course of Mathematics: For the Use of Academies, as Well as Private ...

Charles Hutton - Mathematics - 1822 - 618 pages
...their sides or angles, Thus, 41. A Pentagon is a polygon of five sides ; a Hexagon, of six sides ; a Heptagon, seven; an Octagon, eight; a Nonagon, nine ; a Decagon, ten ; an Undecagon, eleven ; and 4 Dodecagon, twelve sides. o 27S 42. A Regular Polygon has all its sides and all its angles equal....
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A Course of Mathematics: For the Use of Academies as Well as ..., Volume 1

Charles Hutton - Mathematics - 1831 - 634 pages
...polygon of five sides ; a Hexagon, of six sides ; a Heptagon, seven ; an Octagon, eight ; a Non. agon, nine ; a Decagon, ten ; an Undecagon, eleven ; and a Dodecagon, twelve sides. 42. A Regular Polygon has all its sides and all its angles equal. — Ifthey are not both equal, the...
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