| James Maurice Wilson - 1878
...angles are equal to twice as many right angles as the figure has sides ; •but all the interior angles, **together with four right angles, are equal to twice as many right angles as the figure has** sides; (Th. 26.) therefore all the exterior angles are equal to four right angles*. QED THEOREM 27.... | |
| Benjamin Gratz Brown - Geometry - 1879 - 48 pages
...six-sided figure four times as great, or 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... | |
| Joseph Wollman - 1879
...regular hexagon bear to a right angle ? I. 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... | |
| Moffatt and Paige - 1879
...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 right angles as the figure has** sides. COR. 2. All the exterior angles of any rectilineal figure, made by producing the sides successively... | |
| University of Madras - 1879
...1 PM EUCLID ANT) ALGEBBA. F. 8. BTANS, 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... | |
| Euclides - 1879
...1) Therefore, if a side of any triangle, &c. 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... | |
| Michael McDermott - Civil engineering - 1879 - 586 pages
...and then mark the Y and telescope 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... | |
| Edward Harri Mathews - 1879
...one 'of 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... | |
| Charles Mansford - 1879
...figure with each 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... | |
| Elizabethan club - 1880
...acute angles at the 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... | |
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