| Hippolyte Taine - 1998 - 588 sider
...together equal to four right angles ; hence it follows that the polygon contains a number of angles which, **together with four right angles, are equal to twice as many right angles as** there are sides. — Here the explanatory intermediate is a character comprised in all the elements... | |
| ...regular decagon. The corollary to Euc. i. 32 states that 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. Let the angle of a regular decagon contain x right angles, so that all the angles are together... | |
| 1891
...an application of Euclid I. 82, Cor. 1, which proves 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. To be able to apply this test, one must first find out the interior angles from the bearings.... | |
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