 | Thomas Hill - Geometry - 1855 - 152 pages
...straight lines is a polygon ; and, if its vertices are in a circumference, it is an inscribed polygon. 2. A polygon of three sides is called a triangle ; of four sides a quadrangle ; of five sides a pentagon ; of six sides a hexagon. 3. Any polygon of more than three sides... | |
 | Emerson Elbridge White - Arithmetic (Commercial), 1861 - 1861 - 348 pages
...an equivalent space. A rectilinear figure, or polygon, is a plane figure bounded by straight lines. A polygon of three sides is called a triangle, of four sides a quadrilateral, of five a pentagon, of six a hexagon, and so on. A regular polygon is one whose sides and angles arc equal.... | |
 | Edward Brooks - 1863 - 344 pages
...larger than a right angle ; as, DEG. ' 462. A Polygon is a figure bounded by straight lines; as, ABODE. A Polygon of three sides is called a Triangle, of four sides, a Quadrilateral, etc. D c 463. The Area of a polygon is the number of square units in its surface. THE TRIANGLE. 464.... | |
 | Edward Brooks - Arithmetic - 1874 - 352 pages
...larger than a right angle ; as, DECr. 462. A Polygon is a figure bounded by straight lines; as, ABODE. A Polygon of three sides is called a Triangle, of four sides, a E < Quadrilateral, etc. D c 463. The Area of a polygon is the number of square units in its surface.... | |
 | Horatio Nelson Robinson - Arithmetic - 1875 - 486 pages
...The Area of a plane figure is the surface included withiii the lines which bound it A regular polygon has all its sides and all its angles equal. A polygon of three sides is called a trigon, or triangle ; of four sides, a tetragmt, or quadrilateral ; of five sides, a pentagon, etc.... | |
 | Samuel Mecutchen, George Mornton Sayre - Arithmetic - 1877 - 200 pages
...from the nature of its boundary line or lines. A Polygon is a plane figure bounded by straight lines. A polygon of three sides is called a Triangle; of...of five sides, a Pentagon; of six sides, a Hexagon, etc. TRIANGLES. A Triangle is a plane figure bounded by three straight lines. A Scalene Triangle has... | |
 | Albert Newton Raub - Arithmetic - 1877 - 348 pages
...is a figure bounded by straight lines. The distance around a polygon is called its perimeter. 340. A polygon of three sides is called a triangle; of four sides, a quadrilateral; of five, & pentagon, etc. 341. The Area of a polygon is the surface included within the lines which bound it.... | |
 | Edward Brooks - Arithmetic - 1877 - 564 pages
...lines either straight or curved. 1008. A Polygon is a figure bounded A by straight lines; as, ABODE. A Polygon of three sides is called a Triangle, of four sides, a Quadrilateral, etc. 1009. A Diagonal of a polygon is a DC line joining the vertices of two angles not consecutive.... | |
 | Edward Brooks - Arithmetic - 1877 - 444 pages
...lines, either straight or curved. A 737. A Polygon is a figure bounded by straight lines; as, ABODE. A Polygon of three sides is called a Triangle, of four sides, a Quadrilateral, etc. ic 738. A Diagonal of a polygon is a line j* .ning the verti'-os of two angles not consecutive.... | |
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A Polygon of three sides is called a Triangle; of four sides, a Quadrilateral; of five sides, a Pentagon ; of six sides, a Hexagon, etc. 
