Solid Geometry, Books 6-8 |
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ABCD altitude angles are equal bisect circle circular cone circumscribed coincide cone of revolution congruent conic surface convex COROLLARY corresponding proposition cube diagonal diameter dihedral angles draw E-ABC E-ACD EXERCISE face angles Find the area Find the lateral Find the volume frustum given plane given point Given the plane inscribed intersection isosceles lateral area lateral edges lateral faces MN and PQ number of sides parallel planes perpendicular plane angles plane geometry plane MN plane perpendicular plane PQ point equidistant polar triangle polyhedral angle prismatoid Proof prove radii radius rectangular parallelepiped regular polygon regular polyhedrons regular pyramid right angles right circular cylinder right prism right section slant height solid geometry sphere spherical excess spherical polygon spherical surface spherical triangle square straight line symmetric tangent tetrahedron THEOREM triangular prism triangular pyramid trihedral V-ABC vertex vertices zone