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altitude applied axis base called circle circumference circumscribed coincide common Compare Compute cone construct contains corresponding cube cylinder denote determine diameter dihedral angles dimensions distance divided draw drawn edges equally distant equivalent evident EXERCISES faces figure Find the volume formed formula four frustum geometry given given plane Hence homologous inches included inscribed intersection lateral area lateral edges lateral faces less limit locus lune measure meet mutually number of sides opposite parallel parallel planes pass perimeter perpendicular plane plane MN polar pole polygon polyhedron prism PROBLEMS projection Proof PROPOSITION prove pyramid radii radius ratio regular respectively right angle segment sides similar solid sphere spherical triangle square straight line surface symmetrical tangent tetrahedron THEOREM third total area triangular trihedral vertex vertices zone
Page 253 - Conversely, when two sides of a triangle are equal respectively to two sides of another, but the third side of the first is greater than the third side of the second...
Page 301 - Any oblique prism is equivalent to a right prism whose base is a right section of the oblique prism, and whose altitude is equal to a lateral edge of the oblique prism. Let ABCDE-A' be the oblique prism. At any point F in the edge AA', pass a plane perpendicular to AA' and forming the right section FGHIK Produce AA...
Page 253 - PERIPHERY of a circle is its entire bounding line ; or it is a curved line, all points of which are equally distant from a point within called the centre.
Page 389 - COR. 2. The volume of any truncated triangular prism is equal to the product of its right section by one third the sum of its lateral edges.
Page 373 - The sum of the angles of a spherical triangle is greater than two and less than six right angles ; that is, greater than 180° and less than 540°. (gr). If A'B'C' is the polar triangle of ABC...
Page 347 - A sphere is a solid bounded by a surface all points of which are equally distant from a point within called the centre.
Page 396 - If two spherical triangles on the same sphere, or equal spheres, have two sides and the included angle of one equal, respectively, to two sides and the included angle of the other, I.
Page 254 - In any proportion the terms are in proportion by division; that is, the difference of the first two terms is to the second term as the difference of the last two terms is to the fourth.