 | Euclid, James Thomson - 1837 - 410 lapas
...the number of their angles, and consequemly of their sides. Thus, a polygon of five aides is called a pentagon; of six, a hexagon ; of seven, a heptagon ; of eight, an octagon; of nine, a nonagon, or enneagon ; of ten, a decagon ; of twelve, a dodecagon; and of fifteen, a gut'ndecagon,... | |
 | Chambers W. and R., ltd - 1842 - 744 lapas
...; an irregular polygon has its sides or angles, or both, unequal. A polygon of five sides is called a pentagon ; of six, a hexagon ; of seven, a heptagon ; of eight, an octagon ; of nine, a nonagon ; of ten, a decagon ; of eleven, an undecagon ; of twelve, a dodecagon ; and of fifteen,... | |
 | Thomas Kentish - 1852 - 272 lapas
...equal, it is a regular polygon ; if unequal, an irregular polygon. A polygon of five sides is termed a pentagon ; of six, a hexagon ; of seven, a heptagon ; of eight, an octagon ; of nine, a nonagon ; of ten, a decagon ; of eleven, an undecagon ; and of twelve, a dodecagon. A triangle... | |
 | Horatio Nelson Robinson - 1860 - 470 lapas
...oblique. I— than four are denominated only by the number of sides. A polygon of five sides is called a Pentagon ; of six, a Hexagon; of seven, a Heptagon; of eight, an Octagon ; of nine, a Nonagon, etc. 41. Diagonals of a polygon are lines joining the vertices of angles not ad-*... | |
 | Euclides - 1860 - 288 lapas
...regular angles. polygon has all its sides equal, and also all its 9. A polygon of five sides is called a pentagon; of six, a hexagon; of seven, a heptagon; of eight, an octagon; of nine, a nonagon ; of ten, a decagon ; of eleven, an undecagon ; of twelve, a dodecagon ; and of fifteen,... | |
 | Thomas Kentish (of London.) - 1861 - 372 lapas
...compute the area of each separately. A polygon of three sides is called a trigon ; of four, a tetragon ; of five, a pentagon ; of six, a hexagon ; of seven, a heptagon ; of eight, an octagon ; of nine, a nonagon ; of ten, a decagon ; of eleven, an undecagon ; of twelve, a dodecagon ; and of sixteen,... | |
 | Euclides - 1862 - 140 lapas
...the extremities of it are in the circumference of the circle. 9. A polygon of five sides is called a pentagon; of six, a hexagon; of seven, a heptagon; of eight, an octagon; of nine, a nonagon; of ten, a decagon; of eleven, an undecagon; of twelve, a dodecagon; and of fifteen,... | |
 | Horatio Nelson Robinson - 1868 - 276 lapas
...oblique. L. than four are denominated only by the number of sides. A polygon of five sides is called a Pentagon; of six, a Hexagon • of seven, a Heptagon; of eight, an Octcujon / of nine, a Nonagon, etc. 41. Diagonals of a polygon are lines joining the vertices of angles... | |
 | Edward Olney - 1872 - 562 lapas
...frequently made. 116. A polygpn of three sides is a triangle; of four, a quadrilateral; of five, & pentagon ; of six, a hexagon ; of seven, a heptagon ; of eight, an octagon; of nine, a nonagon; of ten, a decagon; of twelve, a dodecagon. A Regular Polygon is a polygon whose sides... | |
 | Edward Olney - 1872 - 472 lapas
...made. 1 16. A polygon of three sides is a triangle ; of four, a quadrilateral; of five, & petit ag on ; of six, a hexagon ; of seven, a heptagon ; of eight, an octagon; of nine, a nonagon; of ten, a decagon; of twelve, a dodecagon. Н7. A Regular Polygon is a polygon whose... | |
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A polygon of three sides is a triangle ; of four, a quadrilateral; of five, a pentagon ; of six, a hexagon ; of seven, a heptagon; of eight, an octagon; of nine, a nonagon; of ten, a decagon; of twelve, a dodecagon. 
