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 Books Bücher F, which is the common vertex of the triangles ; that is, together with four right angles. Therefore all the angles of the figure, together with four right angles, are equal to twice as many right angles as the figure has sides. The Elements of Euclid, Viz: The Errors, by which Theon, Or Others, Have ... - Seite 38
von Robert Simson - 1775 - 520 Seiten
Vollansicht - Über dieses Buch ## A text-book of engineering drawing and design

Sidney Herbert Wells - 1905 - 246 Seiten
...depends upon Corollary I. of Euclid i., 32, which says, that " the interior angles of any straight lined figure together with four right angles are equal to twice as many right angles as the figure has sides." The most common of the regular polygons used in engineering designs are the pentagon (five-sided),...
Vollansicht - Über dieses Buch ## Annual Report - Dept. of Education

...right angles. — I. 32. (6) What is a Corollary ? Show 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. (c) Derive the magnitude of an angle of a regular octagon. (d) If the exterior vertical angle...
Vollansicht - Über dieses Buch ## A School Geometry, Teile 1-4

Henry Sinclair Hall - 1908
...parallel to the base. -ve* f1 — 44 GEOMETRY. COROLLARY 1. ^M <Ae interior angles of any rectilineal figure, together with four right angles, are equal to twice as many right angles as the figure has sides. Let ABCDE be a rectilineal figure of & sides. It is required to prove that all the interior...
Vollansicht - Über dieses Buch ## Books 10-13 and appendix

Euclid - 1908
...course be arranged so as not to assume the proposition that the interior angles of a convex polygon together with four right angles are equal to twice as many right angles as the figure has sides. Let there be any convex polyhedral angle with V as vertex, and let it be cut by any plane meeting...
Vollansicht - Über dieses Buch ## Annual Report of the Department of Education of the ..., Band 4,Teil 1911;Band 6

...straight lines shall be parallel. 28—1. 6 8. Prove 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. 8 9. (a) If a straight line be bisected and produced to any point, the rectangle contained by...
Vollansicht - Über dieses Buch ## The Teaching of Mathematics in the United Kingdom

...acute angle, then AD will be greater than half BC. 2. Prove that 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. Find the number of sides of a regular polygon, each angle of which is equal to the sum of an...
Vollansicht - Über dieses Buch ## Special Reports on Educational Subjects, Bände 26-27

Great Britain. Board of Education - 1912 - 1032 Seiten
...acute angle, then AD will be greater than half BC. 2. Prove that 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. Find the number of sides of a regular polygon, each angle of which is equal to the sum of an...
Vollansicht - Über dieses Buch ## Euclid's Elements, Bücher 1-6;Bücher 11

Euclid - 1933 - 298 Seiten
[ Der Inhalt dieser Seite ist beschränkt. ] ## Mathematics in Aristotle

Sir Thomas Little Heath - 1949 - 291 Seiten
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