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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. "
Calendar - Page c
by University of Cambridge - 1907
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Logic and Argument

James Hervey Hyslop - Logic - 1899 - 280 pages
...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...
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Elementary Geometry, Plane and Solid: For Use in High Schools and Academies

Thomas Franklin Holgate - Geometry - 1901 - 462 pages
...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....
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Elementary Geometry: Practical and Theoretical

Charles Godfrey, Arthur Warry Siddons - Geometry - 1903 - 384 pages
...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...
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The School World: A Monthly Magazine of Educational Work and Progress, Volume 5

Education - 1903 - 692 pages
...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...
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School: A Monthly Record of Educational Thought and Progress, Volume 4

Ed - 1905 - 272 pages
...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...
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Calendar, Part 1

University of Calcutta - Universities and colleges - 1907 - 458 pages
...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...
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Calendar

University of Allahabad - 1908 - 568 pages
...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...
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Calendar

University of Allahabad - 1909 - 638 pages
...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...
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Calendar

University of Allahabad - 1911 - 726 pages
...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....
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Report of the Secretary for Public Instruction ..., Volume 36

Queensland. Department of Public Instruction - Education - 1912 - 234 pages
...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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