 | Alfred Baker - 1903 - 154 páginas
...From the result reached in the previous question, show that all the interior angles of any polygon are equal to twice as many right angles as the figure has angles (or sides), less four right angles. 5. How many right angles is the sum of all the angles in... | |
 | American School (Lansing, Ill.) - 1903 - 390 páginas
...ABCDEF oe the given polygon. To prove that the sum of the interior angles A, B, C, D, E, and F, is equal to twice as many right angles as the figure has sides minus two. If from any vertex as A, diagonals AC, AD, AE, are drawn, the polygon will be divided into... | |
 | Caleb Pamely - 1904 - 1242 páginas
...for, " The sum of all the interior angles of any rectilinear figure, together with 4 right angles, are equal to twice as many right angles as the figure has sides." This is not so thorough a test as the plotting, because it checks only the angles taken and not the... | |
 | Euclid - 1904 - 488 páginas
...1756. COROLLARY 1. 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. Let ABCDE be any rectilineal figure. Take F, any point within it, and join F to each of the angular... | |
 | Reginald Empson Middleton - 1904 - 336 páginas
...angles as the figure has sides. The sum of the ' exterior ' angles diminished by four right angles is equal to twice as many right angles as the figure has sides. The sum of the ' differences of latitude ' being ' northings,' is equal to the sum of those which are... | |
 | William Schoch - 1904 - 152 páginas
...of a polygon without measuring them ? Exercise 33. If the sum of the interior angles of a polygon is equal to twice as many right angles as the figure has sides less four right angles, determine the sum of the interior angles of : 1. A six-sided polygon, or hexagon.... | |
 | Sidney Herbert Wells - 1905 - 246 páginas
...which says, that " the interior angles of any straight lined figure together with four right angles are equal to twice as many right angles as the figure has sides." The most common of the regular polygons used in engineering designs are the pentagon (five-sided),... | |
 | Yale University. Sheffield Scientific School - 1905 - 1074 páginas
...altitude is 3 in. PLANE GEOMETRY SEPTEMBER, 1909 1. The sum of all the interior angles of any polygon is equal to twice as many right angles as the figure has sides, less four right angles. 2. The angle between two chords which intersect within a circle is measured... | |
 | C. F. Close - 1905 - 376 páginas
...together with the line AB form an enclosed figure, and the sum of all the interior angles should be equal to twice as many right angles as the figure has sides, less four right angles. We thus have a check on the observed horizontal angles. It should be carefully... | |
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