 | Mansfield Merriman, John Pascal Brooks - Surveying - 1895 - 278 pages
...parallel 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, George Augustus Walton - Arithmetic - 1895 - 438 pages
...hexagon ? octagon ? decagon ? Thus learn that, in general, Tfie sum of the angles of any polygon ts 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, how... | |
 | Santos López Pelegrín - 1895 - 352 pages
...school in Seville, was making lines on paper, occupied in proving that " the sum of all the interior angles of any polygon is equal to twice as many right angles, wanting four, as the figure has sides." These vexatious commonplaces of the school kept him very busy.... | |
 | Mansfield Merriman, John Pascal Brooks - Surveying - 1895 - 286 pages
...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... | |
 | Joe Garner Estill - 1896 - 186 pages
...angles are equal. 3. Either side of a triangle is greater than the difference of the other two. 4. The sum of the angles of any polygon is equal to twice...as the polygon has sides, less four right angles. 5. The areas of similar triangles are to each other as the squares of their homologous sides. 6. The... | |
 | Joe Garner Estill - 1896 - 214 pages
...angles are equal. 3. Either side of a triangle is greater than the difference of the other two. 4. The sum of the angles of any polygon is equal to twice...as the polygon has sides, less four right angles. 5. The areas of similar triangles are to each other as the squares of their homologous sides. 6. The... | |
 | Webster Wells - Geometry - 1898 - 284 pages
...two rt. 4.] (§ 84) Hence, the sum of the A of the polygon ia n — 2 times two rt. <£, 127. Cor. I. The sum of the angles of any polygon is equal to twice...as the polygon has sides, less four right angles. For if R represents a rt. Z, and n the number of sides of a polygon, the sum of its A is (?i — 2)... | |
 | Webster Wells - Geometry - 1898 - 264 pages
...of each A is two rt. A. [The sum of the A of any A is equal to two rt. AJ (§ 84) 127. Cor. I. TJie sum of the angles of any polygon is equal to twice...as the polygon has sides, less four right angles. "For if R represents a rt. Z., and n the number of sides of a polygon, the sum of its A is (n — 2)... | |
 | Webster Wells - Geometry - 1899 - 424 pages
...the A of each A is two rt. A. [The sum of the A of any A is equal to two rt. A] (§ 84) 127. Cor. I. The sum of the angles of any polygon is equal to twice...as the polygon has sides, less four right angles. For if R represents a rt. Z, and n the number of sides of a polygon, the sum of its A is (n — 2)... | |
 | William James Milne - Geometry - 1899 - 396 pages
...is the sum of the exterior angles of a polygon equal ? Theorem. The sum of the angles of any convex polygon is equal to twice as many right angles as the polygon has sides less two. D Data : A convex polygon of any number (n) of sides, as ABCDE. To prove the sum of the angles,... | |
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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. 
