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" 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. "
The Elements of Euclid: Viz. the First Six Books, Together with the Eleventh ... - Side 35
av Euclid - 1810 - 518 sider
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The Teaching of Mathematics in the United Kingdom

Great Britain. Board of Education - 1912 - 632 sider
...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...
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Annual Report of the Department of Education of ..., Volum 4,Del 1911;Volum 6

Alberta. Department of Education - 1912 - 244 sider
...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...
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The Elements of Surveying and Geodesy

William Charles Popplewell - 1915 - 268 sider
...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...
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Surveying and Building Construction for Agricultural Students, Land Agents ...

Alfred Hubert Haines, A. F. Hood Daniel - 1915 - 360 sider
...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...
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Surveying as Practised by Civil Engineers and Surveyors: Including the ...

John Whitelaw - 1916 - 582 sider
...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...
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The Founder's Manual: A Presentation of Modern Foundry Operations, for the ...

David Wells Payne - 1917 - 724 sider
...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...
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A Text-book of Theodolite Surveying and Levelling: For the Use of Students ...

James Park - 1922 - 598 sider
...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...
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Surveying as Practised by Civil Engineers and Surveyors, Including the ...

John Whitelaw - 1924 - 642 sider
...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...
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Stories about Mathematics-land, Volum 2

D. Ponton - 1927 - 168 sider
...2. The centre of a regular figure is the same point as the centre of a circle. 3. A regular figure can be divided into as many triangles as the figure has sides. Take your protractor and measure the angles at the centre of any two figures you care to choose. They...
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Euclid's Elements, Bøker 1-6;Bok 11

Euclid - 1933 - 328 sider
[ Beklager, innholdet på denne siden er tilgangsbegrenset. ]
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