| Moffatt and Paige - 1879 - 474 pages
...sides of the figure. But, by the preceding corollary, all the interior angles, together with four right **angles, are equal to twice as many right angles as the figure has sides.** Therefore all the interior angles, together with all the exterior angles of the figure, are equal to... | |
| W J. Dickinson - Geometry - 1879 - 44 pages
...produced to meet, the angles formed by these lines, together with eight right angles, are together **equal to twice as many right angles as the figure has sides.** Same proposition. ABC is a triangle right-angled at A, and the angle B is double of the angle C. Show... | |
| Rolla Rouse - 1879 - 400 pages
...40 ... ... ... ... ... 103 The exterior and interior angles of an rectilineal figure, are together **equal to twice as many right angles as the figure has sides,** 41 ... 104 „ angles are together equal to four right angles, 42 ... ... ... ... „ The interior... | |
| Isaac Sharpless - Geometry - 1879 - 282 pages
...But ACD+ACB = 2R; BAC+ABC+ACB = 2R. Corollary 1.—All the interior angles of a polygon are together **equal to' twice as many right angles as the figure has sides,** minus four right angles. Let ABODE be a polygon, and let n represent the number of its sides. Draw... | |
| Oxford univ, local exams - 1880 - 396 pages
...placed in a circle. 2. 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.** 3. If the square described on one side of a triangle be equal to the squares described on the other... | |
| John Henry Robson - 1880 - 116 pages
...1, it is proved 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."** If, therefore, we suppose the polygon to have n sides, All its interior angles + 4.90 .= 272.90 . -.... | |
| Sir Norman Lockyer - Electronic journals - 1880 - 668 pages
...take Theorem XXVI. of the syllabus, that the interior angles of any polygon, together with four right **angles, are equal to twice as many right angles as the figure has sides.** In the new notation we would say that the sum of the interior angles of the polygon is equal to a number... | |
| Elizabethan club - 1880 - 156 pages
...similarly of the obtuse angles. 3. All the angles of a rectilineal figure, together with four right **angles, are equal to twice as many right angles as the figure has sides.** A floor has to be laid with tiles in the form of regular figures all equal and similar ; show what... | |
| Isaac Todhunter - Euclid's Elements - 1880 - 426 pages
...&c. <JE». 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** side*. For any rectilineal figure ABCDE can be divided into as many triangles as the figure has sides,... | |
| William Mitchell Gillespie - Surveying - 1880 - 540 pages
...proposition of Geometry, that in any figure bounded by straight lines, the sum of all the interior angles is **equal to twice as many right angles, as the figure has sides** less two ; since the figure can be divided into that number of triangles. Hence this common rule. "... | |
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