 | Ireland commissioners of nat. educ - 1834 - 370 páginas
...those which have raore than four sides. They receive particular names fi-om the number of their sides. Thus, a Pentagon has five sides ; a Hexagon, has six sides ; a Heptagon, seven ; an Octagon, eight ; a Nonagon, nine ; a Decagon, ten ; an Undecayon, eleven ; and a Duodecagon,... | |
 | Luke Hebert - 1835 - 816 páginas
...three sides is called a triangle, and a figure of four sides, a quadrangle. A pentagon is a polygon of five sides. A hexagon has six sides. A heptagon has seven sides. An octagon has eight sides. А попagет, nine sides. A decagon, ten sides. An undecagon, eleven sides. A duodecagon, twelve... | |
 | Luke Hebert - 1836 - 814 páginas
...three sides is called a triangle. and a figure of four sides, a quadrangle. A pentagon is a polygon of five sides. A hexagon has six sides. A heptagon has...seven sides. An octagon has eight sides. A nonagon, nine sides. A decagon, ten sides. An undecagon, eleven sides. A duodecagon, twelve sides. When they... | |
 | Commissioners of National Education in Ireland - 1837 - 284 páginas
...those which have more than four sides. They receive particular names from the number of their sides. Thus, a Pentagon has five sides ; a Hexagon has six sides ; a Heptagon, seven ; an Octagon, eight ;. a Nonagon, nine ; a Decagon, ten ; an Undecagon, eleven ; and a Dodecagon... | |
 | Hugo Reid - 1872 - 148 páginas
...of the kind of polygon given. 359. Regular polygons are named according to the number of sides : — A Pentagon has five sides. A Hexagon has six sides....A Nonagon has nine sides. A Decagon has ten sides. An Undecagon has eleven sides. A Dodecagon has twelve sides. Problem 14. 360. To find the area of a... | |
 | Adam Hammond - 1885 - 184 páginas
...those which have more than four sides. They receive particular names from the number of their sides ; thus a pentagon has five sides, a hexagon has six sides, a heptagon seven, an octagon eight, a nonagon nine, a decagon ten, an undecagon eleven, and a dodecagon has twelve... | |
 | Robert Wahl, Max Henius - 1902 - 1288 páginas
...with right angles is called a "rectangle." A rectangle whose sides are all equal is called a "square." A "pentagon" has five sides. A "hexagon" has six sides...."heptagon" has seven sides. An "octagon" has eight sides. Fig. 22 — Trapezoid. Fig. 23— Trapezium. Fig. 24— Rectangle. The "perimeter" is the boundary... | |
 | Joseph Harrison (A.M.I.C.E.) - 1903 - 300 páginas
...number of sides may be three or upwards. A triangle has three sides. A quadrilateral has four sides. A pentagon has five sides. A hexagon has six sides....heptagon has seven sides. An octagon has eight sides. In what follows, unless otherwise stated, by polygon is to be understood a convex polygon, all the... | |
 | A. Herring-Shaw - 1910 - 288 páginas
...nine sides. A Decagon has ten sides. An Undecagon has eleven sides. A Duodecagon has twelve sides. A Pentagon has five sides. A Hexagon has six sides....Heptagon has seven sides. An Octagon has eight sides. CHAPTER II PROBLEMS OF TRIANGLES, CIRCLE, QUADRILATERALS, ETC. LINES AND ANGLES Problem 1. — To bisect... | |
 | F. A. Brining, D. N. Avasia - 1913 - 282 páginas
...polygon has its sides and angles unequal. Polygons are named according to the number of their sides. A pentagon has five sides. A hexagon has six sides....A nonagon has nine sides. A decagon has ten sides. An undecagon has eleven sides. A duodeeagon has twelve sides. The centre of a regular polygon is a... | |
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Polygons are those which have more than four sides. They receive particular names from the number of their sides ; thus a pentagon has five sides, a hexagon has six sides, a heptagon seven, an octagon eight, a nonagon nine, a decagon ten, an undecagon... 
