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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...
Manual of Geometry and Conic Sections: With Applications to Trigonometry and ... - Page 19
by William Guy Peck - 1876 - 366 pages

## Plane and Solid Geometry

Arthur Schultze, Frank Louis Sevenoak - Geometry - 1901 - 394 pages
...an adjacent one. A diagonal is a straight line joining the vertices of two non-adjacent angles. 61. A polygon of three sides is called a triangle; one of four sides, a quadrilateral. TRIANGLES 62. A triangle having three unequal sides is a scalene triangle. An isosceles triangle has...

## Plane and Solid Geometry

Arthur Schultze, Frank Louis Sevenoak - Geometry - 1901 - 396 pages
...an adjacent one. A diagonal is a straight line joining the vertices of two non.adjacent angles. 61. A polygon of three sides is called a triangle; one of four sides, a quadrilateral. TRIANGLES 62. A triangle having three unequal sides is a scalene triangle. An isosceles triangle has...

## Plane and Solid Geometry

Arthur Schultze, Frank Louis Sevenoak - Geometry - 1902 - 394 pages
...an adjacent one. A diagonal is a straight line joining the vertices of two non-adjacent angles. 61. A polygon of three sides is called a triangle; one of four sides, a quadrilateral. TRIANGLES 62. A triangle having three unequal sides is a scalene triangle. An isosceles triangle has...

## Plane Geometry

Arthur Schultze - 1901 - 260 pages
...an adjacent one. A diagonal is a straight line joining the vertices of two non.adjacent angles. 61. A polygon of three sides is called a triangle; one of four sides, a quadrilateral. TRIANGLES 62. A triangle having three unequal sides is a scalene triangle. An isosceles triangle has...

## A Textbook of Electric Lighting and Railways, Volume 1

International Correspondence Schools - Electric lighting - 1901 - 624 pages
...polygon is one in which all the sides and all the angles are equal. 64. A polygon of five sides is called a pentagon ; one of six sides, a hexagon ; one of seven sides, a heptagon, Pentagon. Hexagon. Heptagon. Octagon. Decagon. Dodecagon. Fio. 33. etc. Regular polygons having from...

## A Textbook on Metallurgy of Gold, Silver, Copper, Lead, and Zinc, Volume 1

International Correspondence Schools - Arithmetic - 1902 - 794 pages
...polygon is one in which all the sides and all the angles are equal. 64. A polygon of five sides is called a pentagon ; one of six sides, a hexagon ; one of seven sides, a heptagon, Pentagon. Hexagon. Heptagon. Octagon. Decagon. Dodecagon. FIG. S3. etc. Regular polygons having from...

## A Textbook on Steam Engineering, Volume 1

Engineering - 1902 - 514 pages
...polygon is one in which all the sides and all the angles are equal. 64. A polygon of five sides is called a pentagon ; one of six sides, a hexagon ; one of seven sides, a heptagon, Pentagon. Hexagon. Heptagon. Octagon. Decagon. Dodecagon. FIG. 33. etc. Regular polygons having from...

## A Manual of Mechanical Drawing

Philip Devereux Johnston - Mechanical drawing - 1903 - 220 pages
...angles are equal. 46 Polygons are named from the number of their sides. Л polygon of three sides is a Triangle, one of four sides a Quadrilateral, one of five sides a Pentagon, one of six sides a Нел-agon, one of seven sides a Heptagon, one of eight sides an Octagon, one of nine sides a Nonagon,...