Plane and Solid Geometry

altitude angle approach base bisector bisects chord circle circular circumference circumscribed coincide common cone construct containing cutting cylinder described diagonals diameter dihedral angles divided Draw drawn edges equally distant equiangular equilateral triangle equivalent Explain external face figure Find Find the area formed four frustum given line given point greater half Hence hexagon homologous hypotenuse inches included indefinitely inscribed intersecting isosceles triangle lateral area legs length less limit locus mean measured meet midpoint opposite pair parallel parallelepiped parallelogram pass perimeter perpendicular plane MN polygon polyhedron prism PROBLEM Proof proportional Prove pyramid quadrilateral radii radius ratio rectangle regular regular polygon Required respectively right angles right triangle segments sides similar sphere spherical triangle square Statement straight line Suppose surface tangent THEOREM third trapezoid unit vertex vertices volume