Plane and Solid Geometry

AABC ABCD acute angle adjoining figure altitude base bisectors bisects called central angle chord circular cone circumference circumscribed congruent construct Corollary corresponding cube cylinder diagonal diameter dihedral angles distance divide drawn equiangular equilateral triangle EXERCISES feet frustum given line given point Hence HINT hypotenuse inches long inscribed interior angles intersection isosceles triangle lateral area lateral edges length line joining locus lune measured middle point number of sides opposite Outline of proof parallel lines parallelepiped parallelogram perimeter perpendicular polyhedral angle polyhedron prism prove pyramid quadrilateral radii radius ratio rectangle regular polygon regular polyhedron respectively rhombus right angles right circular right triangle ruler and compasses secant segment Show similar slant height sphere spherical polygon spherical triangle square straight line subtended surface tangent tetrahedron Theorem trapezoid triangle ABC triangular trihedral vertex vertices volume