| Great Britain. Board of Education - 1912 - عدد الصفحات: 1044
...acute angle, then AD will be greater than half BC. 2. Prove that the interior angles of any rectilinear figure together with four right angles are equal to...twice as many right angles as the figure has sides. Find the number of sides of a regular polygon, each angle of which is equal to the sum of an angle... | |
| Alberta. Department of Education - 1912 - عدد الصفحات: 244
...straight lines shall be parallel. 28—1. 6 8. Prove that 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. 8 9. (a) If a straight line be bisected and produced to any point, the rectangle contained by the whole... | |
| Great Britain. Board of Education - 1912 - عدد الصفحات: 632
...acute angle, then AD will be greater than half BC. 2. Prove that the interior angles of any rectilinear figure together with four right angles are equal to...twice as many right angles as the figure has sides. Find the number of sides of a regular polygon, each angle of which is equal to the sum of an angle... | |
| William Charles Popplewell - 1915 - عدد الصفحات: 268
...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... | |
| Alfred Hubert Haines, A. F. Hood Daniel - 1915 - عدد الصفحات: 360
...fulfilled :— 1. All the interior deduced or observed angles together with four right angles must be equal to twice as many right angles as the figure has sides. 2. The northings must equal the southings. 3. The eastings must equal the westings. In ordinary traverse... | |
| John Whitelaw - 1916 - عدد الصفحات: 582
...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 - 1917 - عدد الصفحات: 724
...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 - 1922 - عدد الصفحات: 598
...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 - 1924 - عدد الصفحات: 642
...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... | |
| Euclid - 1933 - عدد الصفحات: 328
[ عذرًا، محتوى هذه الصفحة مقيَّد ] | |
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