| W J. Dickinson - Geometry - 1879 - 36 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... | |
| Joseph Wollman - 1879
...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... | |
| Charles Mansford - 1879
...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... | |
| Isaac Sharpless - Geometry - 1879 - 266 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... | |
| Michael McDermott - Civil engineering - 1879 - 586 pages
...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... | |
| Moffatt and Paige - 1879
...together with four right angles. But it has been proved that all the angles of all these triangles are **equal to twice as many right angles as the figure has sides.** Therefore all the angles of the figure, together with four right angles, are equal to twice as many... | |
| Benjamin Gratz Brown - Geometry - 1879 - 48 pages
...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... | |
| Euclides - 1879
...QED Cor. 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 sides.** For any figure ABCDE can be divided into as many As as it has sides, by drawing st. lines from a pt.... | |
| Elizabethan club - 1880
...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 - 400 pages
...the foregoing Corollary all the interior angles of the figure, together with four right angles, are **equal to twice as many right angles as the figure has sides.** Therefore all the interior angles of the figure, together with all its exterior angles, are equal to... | |
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