The Elements of Geometry

altitude anchor-ring Axiom axis bisected bisector called central angle chord circumference circumscribed cone denote diagonals diameter dihedrals distance divided Draw drawn equal circles equally distant equilateral triangle equivalent EXERCISES face-angles faces figure Find the area form a polyhedral frustum given circle given line given point given polygon given triangle greater homologous homologous sides hypotenuse inches inscribed intersect isosceles triangle length line joining locus lune magnitudes mean proportional median number of equal number of sides opposite parallel parallelepiped parallelogram perimeter perpendicular plane geometry polyhedron prism prismatic surface PROBLEM Prop PROPOSITION Prove pyramid quadrilateral radii radius ratio rectangle regular polygon regular polyhedron right angles right triangle secant sector segments similar polygons SIMON NEWCOMB sphere spherical line spherical surface spherical triangle square straight line tangent tetrahedron THEOREM trapezoid triangle ABC triangular trihedral variable vertex vertical angle volume zone