 | Charles Davies - Geometry - 1864 - 358 pages
...XXIOf Polygons Let ABCDE be any polygon: then will 1he sum of its inward angles A+B+C+D+E be equil to twice as many right angles, wanting four, as the figure has sidesFor, from any point P, within the poly- A~ gon, draw the lines P-4, PB, PC, PD, tE, to each cf... | |
 | Gerardus Beekman Docharty - Geometry - 1867 - 474 pages
...angle. THEOREM XIX. In any figure whatever, the sum of all the interior angles, taken together, is equal to twice as many right angles, wanting four, as the figure /MS sides. Let ABCDE be any figure ; then the sum of all its interior angles, A+ B+C+D+E, is equal... | |
 | C. Davies - 1867 - 342 pages
...I Of Polygons Let ABCDE be any polygon : then will the sum of its inward angles A+B+C+D+E be equ1l to twice as many right angles, wanting four, as the figure has sidesFor, from any point P, within the poly- A gon, draw the lines PA, PB, PC, PD, PE, to each cf the... | |
 | Charles Davies - Geometry - 1870 - 392 pages
...angle is equal to one right angle. THEOREM xxi. Тле sum of all the interior angles of any polygon is equal to twice as many right angles, wanting four, as the figure has • lides Of Polygons . Let ABODE be any polygon: then will the sum of its inward angles A+B+C+D+E... | |
 | Evan Wilhelm Evans - Geometry - 1884 - 242 pages
...What polygon can not be concave? THEOREM XXVII. The sum of all the interior angles of any polygon is equal to twice as many right angles, wanting four, as the figure has sides. The point F is any point chosen within the polygon. To F, lines are drawn from all the vertices, forming... | |
 | Charles Davies - Geometry - 1886 - 352 pages
...BOOK I . Of Polygons Let ABCDE be any polygon: then will the sum of its inward angles A+B+C+D+E be equal to twice as many right angles, wanting four, as the figure has sides. For, from anj point P, within the poly. AS gon, draw the lines PA, PB, PC, PD, PE, to each cf the angles,... | |
 | Santos López Pelegrín - 1895 - 352 pages
...making lines on paper, occupied in proving that " the sum of all the interior angles of any polygon is equal to twice as many right angles, wanting four, as the figure has sides." These vexatious commonplaces of the school kept him very busy. Year after year passed. The boy grew... | |
 | Benito Pérez Galdós - Spain - 1895 - 392 pages
...making lines on paper, occupied in proving that " the sum of all the interior angles of any polygon is equal to twice as many right angles, wanting four, as the figure has sides." These vexatious commonplaces of the school kept him very busy. Year after year passed. The boy grew... | |
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Angles, taken together, is equal to Twice as many Right Angles, wanting four, as the Figure has Sides. 
