| William Charles Popplewell - Geodesy - 1915 - 268 pages
...Stated precisely, " the sum of all the internal angles of a closed polygon plus four right angles is **equal to twice as many right angles as the figure has sides."** So that it is easy from the field notes to find the internal angle at each corner of the figure, and... | |
| John Whitelaw - Surveying - 1916 - 578 pages
...measurements before leaving the ground, as " the sum of the interior angles of any rectilinear figure is **equal to twice as many right angles as the figure has sides,** less four right angles." In the case of Fig. 73, as the figure is four-sided the sum of the interior... | |
| David Wells Payne - Founding - 1917 - 724 pages
...to corresponding angles are proportional. (6) In any polygon, the sum of all the interior angles is **equal to twice as many right angles as the figure has sides,** less four right angles. (7) In any polygon the sum of all the exterior angles is equal to four right... | |
| James Park - Azimuth - 1922 - 598 pages
...iii . . . . 141 12 iv .... 66 40 Total . 360° 00' And the sum of the internal angles of a polygon is **equal to twice as many right angles as the figure has sides,** less four right angles. Our figure has four sides, .-. 90(4x2) -(4x90) =360°, which agrees with the... | |
| John Whitelaw - Surveying - 1924 - 650 pages
...measurements before leaving the ground, as " the sum of the interior angles of any rectilinear figure is **equal to twice as many right angles as the figure has sides,** less four right angles." In the case of Fig. 73, as the figure is four-sided the sum of the interior... | |
| Canadian Mining Institute - Mineral industries - 1912 - 778 pages
...know from Euclid that the sum of the interior angles of any closed figure bounded by straight lines is **equal to twice as many right angles as the figure has sides** less four right angles; figure A has 12 sides, therefore, the interior angles are equal to 20 right... | |
| Hippolyte Taine - Psychology - 1998 - 596 pages
...divisible by 9. Every convex polygon contains a number of angles which, together with four right angles, **are equal to twice as many right angles as the figure has sides.** Here are two laws in which the first datum is a sum of separable data; in fact, the written number... | |
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