 | Adrien Marie Legendre - Geometry - 1863 - 464 pages
...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...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... | |
 | Evan Wilhelm Evans - Geometry - 1862 - 116 pages
...the perpendicular is the longest (Theo. XIX). Sit. VII.— OF POLYGONS IN GENERAL. DEFINITIONS. 1. A polygon of five sides is called a PENTAGON; one of six sides, a HEXAGON ; of seven sides, a HEPTAGON ; of eight sides, an OCTAGON ; of ten sides, a DECAGON ; of twelve sides,... | |
 | Charles Davies - Geometry - 1872 - 464 pages
...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...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... | |
 | Adrien Marie Legendre - Geometry - 1874 - 500 pages
...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...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... | |
 | Lorenzo Fairbanks - 1875 - 472 pages
...only three sides is called a Triangle ; one having four sides, a Quadrilateral ; one of five sides, a Pentagon ; one of six sides, a Hexagon ; 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 one right... | |
 | William Guy Peck - Conic sections - 1876 - 376 pages
...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; and so on. Classification of Triangles. 35. Triangles may be classified either with respect to the... | |
 | William Henry Harrison Phillips - Geometry - 1878 - 236 pages
...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...one of eight sides, an octagon; one of nine sides, an enneagon; one of ten sides, a decagon; one of twelve sides, a dodecagon; &c. DEF. 4. An equilateral... | |
 | Charles Davies, Adrien Marie Legendre - Geometry - 1885 - 538 pages
...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...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... | |
 | George Albert Wentworth - Geometry - 1888 - 272 pages
...is called a trigon or triangle; one of four sides, a tetragon or quadrilateral; one of five sides, a pentagon ; one of six sides, a hexagon; one of seven...a heptagon; one of eight sides, an octagon; one of ten sides, a decagon ; one of twelve sides, a dodecagon. PLANK GEOMETRY. BOOK I. PROPOSITION XLIII.... | |
 | George Albert Wentworth - Geometry, Analytic - 1889 - 264 pages
...called a trigon or triangle; one of four sides, a tetragon or quadrilateral ; one of five sides, & pentagon; one of six sides, a hexagon; one of seven...a heptagon; one of eight sides, an octagon; one of ten sides, a decagon ; one of twelve sides, a dodecagon, PLANE GEOMETRY. — BOOK I. PROPOSITION XLIV.... | |
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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... 
