 | Charles Hutton - 1818 - 646 pages
...and they receive other particular names, according to the number 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, nine; a Decagon, ten ; an Undecagon, eleven... | |
 | Charles Hutton - 1822 - 616 pages
...and they receive other particular names, according to the number 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, nine ; a Decagon, ten ; an Undecagon, eleven... | |
 | Anthony Nesbit - 1824 - 476 pages
...called polygons ; and receive their particular denominations from the number of their sides or angles. 36. A pentagon is a polygon of five sides ; a hexagon...undecagon of eleven ; and a duodecagon of twelve. 37. A regular polygon has all its sides and angles equal ; when they are unequal, the polygon is irregular.... | |
 | 1824 - 512 pages
...polygons, and take different names, accord• ing to the number of their sides ; viz. a pentagon of five, a hexagon of six, a heptagon of seven, an octagon of eight, &o. 20. Polygons are called regular if their sides make equal angle* with each other ; if they do not,... | |
 | 1824 - 726 pages
...polygons, and take different names, according to the number of their sides ; viz. a pentagon of five, a hexagon of six, a heptagon of seven, an octagon of eight, &c. 20. Polygons are called regular, if their sides make equal angles with each other; if they do not,... | |
 | Perry Fairfax Nursey - 1824 - 470 pages
...polygons, and take different names, according to the number of their sides , viz. a pentagon of five, a hexagon of six, a heptagon of seven, an octagon of eight, Sec. 20. Polygons are called regular if their sides make equal angleb with each other; if they do not,... | |
 | E. S. Norman Campbell - 1830 - 304 pages
...four sides, and they receive specific names, according to the number of their sides and angles. Thus, a Pentagon is a Polygon of five sides', a Hexagon...nine, a Decagon of ten, an Undecagon of eleven, and a Dodecagon of twelve sides. All Fortifications are built upon a Polygon, either regular or irregular.... | |
 | William Grier - 1832 - 366 pages
...and they receive other particular names, according to the number 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, nine ; a Decagon, ten ; an Undecagon, eleven... | |
 | Peter Nicholson - 1832 - 424 pages
...called polygons, and receive other particular names according to the number of their sides or angles. A pentagon is a polygon of five sides, a hexagon of six sides, a heptagon seven, an octagon eight, an eneagon nine, a decagon ten, an undecagon eleven, and... | |
 | 1835 - 398 pages
...they receive other particular names, according to the number of their sides or an. gles. 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... | |
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Plane figures that have more than four sides are, in general, called Polygons ; and they receive other particular names, according to the number of their sides or angles. 
