 | James Hervey Hyslop - 1899 - 280 σελίδες
...denied. I give an illustration of its method from mathematics. Suppose I am asked to prove that the sum of the angles of a triangle is equal to two right angles. If now I can show either by observation or proof that the sum of the angles of a triangle is equal to... | |
 | Thomas Franklin Holgate - 1901 - 462 σελίδες
...the exterior angles, on the same side, are supplementary. § 95. 11. THEOREMS ON CONVEX POLYGONS. (2) If the sides of a convex polygon are produced in order, the exterior angles so formed are together equal to four right angles. §117. 12. THEOREMS ON PARALLELOGRAMS.... | |
 | Charles Godfrey, Arthur Warry Siddons - 1903 - 384 σελίδες
...angles are right angles. DBF. A plane figure bounded by straight lines is called a polygon. THEOREM 9. If the sides of a convex polygon are produced in order,...the angles so formed is equal to four right angles. r .>—s y. ;R fig. 95. Data ABODE is a convex polygon; its sides are produced in order and form the... | |
 | 1903 - 692 σελίδες
...line «« parallel to one another. Triangles and Rectilinear Figures. — The sum of the angles of > triangle is equal to two right angles. If the sides of a convex polygon are produced in order, the *"> of the angles so formed is equal to four right angles. If two triangles have two sides of the one... | |
 | 1905 - 272 σελίδες
...ensure a yearly income of ¿200 ? GEOMETRY. — PART I. (Time allowed, z\ hours) (1) Prove that the sum of the angles of a triangle is equal to two right angles. If the interior angle of a regular polygon is 140°, calculate the number of sides. (2) If two triangles have... | |
 | University of Calcutta - 1907 - 458 σελίδες
...which are parallel to the same straight line are parallel to one another. Triangles and rectilineal figures. The sum of the angles of a triangle is equal...the angles so formed is equal to four right angles. Two triangles are equal in every respect — (i) If two sides and the included angle of one triangle... | |
 | University of Allahabad - 1908 - 568 σελίδες
...parallel to the same straight line are parallel to one another. TBIANGLES AND EECTILINEAL FIGUBES. The sum of the angles of a triangle is equal to two right angles. If the side of a convex polygon are produced in order the sum of the angles so formed is equal to four right... | |
 | University of Allahabad - 1909 - 638 σελίδες
...which are parallel to the same straight line are parallel to one another. TRIANGLES AND RECTILINEAR FIGURES. The sum of the angles of a triangle is equal...sides of a convex polygon are produced in order the sura of the angles so formed is equal to four right angles. If two triangles have two sides of the... | |
 | University of Allahabad - 1911 - 726 σελίδες
...which are parallel to the same straight line are parallel to one another. TBIANGLES AND RKCTILINEAL FIGURES. The sum of the angles of a triangle is equal to two right angles. If the sides of convex polygon are produced in order, the sum of the angles so formed is equal to four right angles.... | |
 | Queensland. Department of Public Instruction - 1912 - 234 σελίδες
...OQ = PO. Prove that the locus of Q is a liuo parallel to AB. 5. If the sides of a convex polygon aro produced in order, the sum of the angles so formed is equal to four right angles. Prove this, and prove also from this tho proposition concerning the sum of the interior angles of any... | |
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If the sides of a convex polygon are produced in order, the sum of the angles so formed is equal to four right angles. 
