 | Charles Davies, Adrien Marie Legendre - 1885 - 538 ページ
...are similar. For, the corresponding angles in each are equal, because any angle in either polygon is equal to twice as many right angles as the polygon has sides, less four right angles, divided PROPOSITION II. THEOREM. The circumference of a circle may be circumscribed... | |
 | Charles Davies - 1886 - 352 ページ
...each as there are sides of the polygon : hence, the sum of all the interior and exterior angles will be equal to twice as many right angles as the polygon has sides. But the sum of all the interior angles together with four right angles, is equal to twice as many right... | |
 | Webster Wells - 1886 - 392 ページ
...any one vertex is two right angles (§ 31). Hence the sum of all the interior and exterior angles is equal to twice as many right angles as the polygon has sides. But the sum of the interior angles alone is equal to twice as many right angles as the polygon has... | |
 | Thomas J. Foster - 1891 - 444 ページ
...the exterior angles will equal four right angles. 16. The sum of the interior angles of a polygon is equal to twice as many right angles as the polygon has sides, less four right angles. EXAMPLES. The sum of the interior angles of a quadrilateral = (2X4)— 4 =... | |
 | Bennett Hooper Brough - 1894 - 390 ページ
...the difference being the included angle between the two lines. The sum of the included angles should, with four right angles, be equal to twice as many right angles as the polygon has sides. Station-Line. Distance. Magnetic Bearing. Inclination, Descending. Clmins. Shaft to A 4-58 98° 25'... | |
 | Mansfield Merriman, John Pascal Brooks - 1895 - 286 ページ
...to the same straight line are parallel to each other. The sum of the interior angles of a polygon ia equal to twice as many right angles as the polygon has sides minus four right angles. The sum of the exterior angles formed by producing the sides of a polygon... | |
 | Mansfield Merriman, John Pascal Brooks - 1895 - 278 ページ
...to the same straight line are parallel to each other. The sum of the interior angles of a polygon is equal to twice as many right angles as the polygon has sides minus four right angles. The sum of the exterior angles formed by producing the sides of a polygon... | |
 | Edwin Pliny Seaver - 1895 - 408 ページ
...hexagon ? octagon ? decagon ? Thus learn that, in general, The sum of the angles of any polygon is equal to twice as many right angles as the polygon has sides less two sides. j. If all the angles of a pentagon (hexagon, octagon, decagon, dodecagon) are equal,... | |
 | Joe Garner Estill - 1896 - 214 ページ
...triangle is greater than the difference of the other two. 4. The sum of the angles of any polygon is equal to twice as many right angles as the polygon has sides, less four right angles. 5. The areas of similar triangles are to each other as the squares of their... | |
 | Joe Garner Estill - 1896 - 186 ページ
...triangle is greater than the difference of the other two. 4. The sum of the angles of any polygon is equal to twice as many right angles as the polygon has sides, less four right angles. 5. The areas of similar triangles are to each other as the squares of their... | |
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... is equal to twice as many right angles as the polygon 
