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 Llibres Llibres All the interior angles of any rectilineal figure, together with four right angles, are equal to twice as many right angles as the figure has sides. Elementary Course of Geometry ... - Pàgina 23
per Charles William Hackley - 1847 - 103 pàgines
Visualització completa - Sobre aquest llibre ## A Course of Mathematics: In Two Volumes : for the Use of Academies ..., Volum 1

Charles Hutton - 1816
...former sum. Hence it follows thai the sum of .ill the inward angles of the polygon alone, A + B+C+D + E, is equal to twice as many right angles as the figure has skies, wanting the said four right angles, q. ED THEOREM XX. WHEN every Side of any Figure is produced...
Visualització completa - Sobre aquest llibre ## The Elements of Euclid: Viz. the First Six Books, Together with the Eleventh ...

Euclides - 1816 - 528 pàgines
...with four right angles. Therefore all the angles of the figure, together with four right angles, are equal to twice as many right angles as the figure has sides. Cor. 2. All the exterior angles of any rectilineal figure' are together equal to four right angles....
Visualització completa - Sobre aquest llibre ## A Course of Mathematics: For the Use of Academies, as Well as Private Tuition

Charles Hutton - 1818
...former sum. Hence it follows that the sum of all the inward angles of the polygon alone, A + Bpcf-D4-E, is equal to twice as many right angles as the figure has sides, wanting the said four right angles. H. £• riTHEOREM XX, WHEN every Side of any Figure is produced out, the Sum of all the Outward Angles...
Visualització completa - Sobre aquest llibre ## Elements of Geometry: Containing the First Six Books of Euclid, with a ...

John Playfair - 1819 - 333 pàgines
...all the angles of the figure, together with four right angles, that is, the angles of the figure are equal to twice as many right angles as the figure has sides, wanting four. COR. 2. All the exterior angles of any rectilineal figure are tegether equal to four right angles....
Visualització completa - Sobre aquest llibre ## Elements of Geometry: Containing the First Six Books of Euclid: With a ...

John Playfair - 1819 - 317 pàgines
...many right angles as the figure has sides, wanting four. For all the angles exterior and interior are equal to twice as many right an,gles as the figure has sides ; but the exterior are equal to four right angles ; therefore the interior are equal to twice as many...
Visualització completa - Sobre aquest llibre ## A Course of Mathematics: For the Use of Academies, as Well as Private ...

Charles Hutton - 1822
...triangles, is equal to two right angles (th. 17) ; therefore the sum of the angles of all the triangles is equal to twice as many right angles as the figure has sides. But the sum of all the angles about the point p, which are so / many of the angles of the triangles,...
Visualització completa - Sobre aquest llibre ## Euclid's Elements of Geometry: The Six First Books. To which are Added ...

Euclid, Rev. John Allen - 1822 - 494 pàgines
...FC, FD, FE ; there are formed as many triangles as the figure has sides, all the angles of which are equal to twice as many right angles as the figure has sides [by this prop.] ; but of these all the angles about the point F are equal to four right angles [Ctor....
Visualització completa - Sobre aquest llibre ## The First Six Books with Notes

Euclid - 1822 - 179 pàgines
...Cor. 6. All the internal angles of any rectilineal figure, ABCDE, together with four right angles, are equal to twice as many right angles as the figure has sides. Take any point F within the figure and draw the right lines FA, FB, FC, FD, and FE. There are formed...
Visualització completa - Sobre aquest llibre ## A treatise on navigation, and nautical astronomy

Edward Riddle - 1824 - 551 pàgines
...angles as the figure has sides. But all the interior angles, and four right angles, are also together equal to twice as many right angles as the figure has sides, (Theo. 25.) Hence the interior and the exterior angles of the figure are, together, equal to the interior...
Visualització completa - Sobre aquest llibre ## A Popular Course of Pure and Mixed Mathematics ...: With Tables of ...

Peter Nicholson - 1825 - 372 pàgines
...I). Cor. 1 . All the interior angles of any rectilínea] figure, together with four right angles, are equal to twice as many right angles as the figure has sides. For any rectilineal figure ABCDE can be divided into as many triangles as the figure has sides, by...
Visualització completa - Sobre aquest llibre