| Edward Harri Mathews - 1879
...the angular points of a rectilineal figure to each of the others, that its interior angles together **with four right angles are equal to twice as many right angles as the** figures has sides. 3. The opposite sides and angles of parallelograms are equal to one another. A quadrilateral... | |
| Rolla Rouse - 1879
...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... | |
| W J. Dickinson - 1879 - 36 sider
...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... | |
| Isaac Sharpless - 1879 - 266 sider
...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... | |
| Elias Loomis - 1880 - 443 sider
...the figure has sides. Let ABCDE be any polygon ; then all its interior angles A, B, C, D, E, together **with four right angles, are equal to twice as many right angles as the figure has sides. For,** from any point, F, within it, draw lines FA, FB, FC, etc., to all the angles. The polygon is thus divided... | |
| John Henry Robson - 1880
...Euc. I. 32, Cor. 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 . -.... | |
| Oxford univ, local exams - 1880
...a straight line 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... | |
| Sir Norman Lockyer - 1880
...angle we may 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
...other point, and 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 - 1880 - 400 sider
...of any triangle &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,... | |
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