 | Adrien Marie Legendre - Geometry - 1863 - 464 pages
...angles of the polygon. 19. Polygons are classified according to the number of their sides or angles. A Polygon of three sides is called a triangle / one...heptagon / one of eight sides, an octagon ; one of ten sides, a decagon ; one of twelve sides, a dodecagon, &c. 20. An EQUILATERAL POLYGON, is one whose... | |
 | Benjamin Greenleaf - Geometry - 1866 - 328 pages
...straight, the space they enclose is called a RECTILINEAL FIGURE, or POLYGON ; as the figure ABODE. AB 21. A polygon of three sides is called a TRIANGLE ; one of four sides, a QUADRILATERAL ; one of five, a PENTAGON ; one of six, a HEXAGON ; one of seven, a HEPTAGON ; one of eight, an OCTAGON ; one of nine,... | |
 | Charles Davies - Geometry - 1872 - 464 pages
...angles of the polygon. 19. Polygons are classified according to the number of their sides or angles. A Polygon of three sides is called a triangle/ one...heptagon / one of eight sides, an octagon; one of ten sides, a decagon ; one of twelve sides, a dodecagon, &c. 20. An EQUILATERAL POLYGON, is one whose... | |
 | Benjamin Greenleaf - Geometry - 1873 - 202 pages
...curves. ELEMENTARY GEOMETKY. 17. A Polygon is a plane bounded by straight lines ; as the figure ABCDE. A polygon of three sides is called a triangle; one of four sides, a quadrilateral; one of five, & pentagon; one of six, a hexagon; one of seven, a heptagon; one of eight, an octagon; one of nine,... | |
 | Adrien Marie Legendre - Geometry - 1874 - 500 pages
...angles of the polygon. 19. Polygons are classified according to the number of their sides or angles. A Polygon of three sides is called a triangle ; one...heptagon ; one of eight sides, an octagon / one of ten sides, a decagon / one of twelve sides; a dodecagon, &o. , 20. An EQUILATERAL POLYGON, is one whose... | |
 | Charles Davies - 1874 - 464 pages
...according to the number of their sides or angles. A Polygon of three sides is called a tri>n1gls ; one of four sides, a quadrilateral ; one of five sides,...heptagon / one of eight sides, an octagon / one of ten sides, a decagon ; one of twelve sides, a dodecagon, &c. 20. An EQUILATERAL POLYGON, is one whose... | |
 | Lorenzo Fairbanks - 1875 - 472 pages
...Rectilinear Figure, or Polygon. A Polygon having only three sides is called a Triangle ; one having four sides, a Quadrilateral ; one of five sides, a...one of eight sides, an Octagon ; one of nine sides, a Nonagon ; one of ten sides, a Decagon, etc. 702. A Bight-angled Triangle is a triangle which has... | |
 | Benjamin Greenleaf - Geometry - 1875 - 204 pages
...straight lines or curves. *17. A Polygon is a plane bounded by straight lines; as the figure ABCDE. A polygon of three sides is called a triangle; one of four sides, a quadrilateral; one of five, a pentagon; one of six, a hexagon; one of seven, a heptagon; one of eight, an octagon; one of nine,... | |
 | John Reynell Morell - 1875 - 220 pages
...of the figure. A polygon which has only three sides is a triangle. A polygon of four sides is named a quadrilateral ; one of five sides, a pentagon ; one of six sides, a hexagon, &c. A polygon is convex when it is all on the same side of each of the straight lines that bound it... | |
 | William Guy Peck - Conic sections - 1876 - 376 pages
...equiangular. 34. Polygons are named either from the number of their sides, or from the number of their angles: a polygon of three sides, is called a triangle; one...sides, a heptagon; one of eight sides, an octagon; and so on. Classification of Triangles. 35. Triangles may be classified either with respect to the... | |
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A Polygon of three sides is called a triangle ; one of four sides, a quadrilateral; one of five sides, a pentagon; one of six sides, a hexagon; one of seven sides, a heptagon; one of eight sides, an octagon ; one of ten sides, a decagon ; one of twelve... 
