| Moffatt and Paige - 1879 - 474 pages
...produced, etc. COR. 1. All the interior angles of any rectilineal f1gure, together with four right angles, **are equal to twice as many right angles as the figure has sides.** For any rectilineal figure ABCDE can be divided into as many triangles as the figure has sides, by... | |
| Charles Mansford - 1879 - 112 pages
...of the other angles that the interior angles of any rectilineal figure together with 4 right angles **are equal to twice as many right angles as the figure has sides.** (32.) 113. If two angles have their containing sides respectively parallel to one another the lines... | |
| University of Madras - 1879 - 674 pages
...MA, I. 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.** II. Prove the proposition to which the following is a corollary : The difference of the squares on... | |
| Joseph Wollman - 1879 - 120 pages
...32. Corollary 1. — 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 angles of a regular hexagon + 4 right angles = 12 right angles ; .-. The angles of a regular hexagon... | |
| Benjamin Gratz Brown - Geometry - 1879 - 68 pages
...in other words, all 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.** Again, parallelograms upon equal bases and with the same altitude are equal. Of all figures bounded... | |
| Michael McDermott - Civil engineering - 1879 - 552 pages
...for future operations. 213. All the interior angles of any polygon, together with four right angles, **are equal to twice as many right angles as the figure has sides.** Example. Interior angles A, B, C, D, E, F = n° 4 right angles, 860 Sum = n° + 360° Namber of sides... | |
| 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... | |
| 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... | |
| 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... | |
| 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... | |
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