Plane and Solid Geometry

ABCD altitude angle approaches axis base bisector bisects called centre chord circle circular circumference circumscribed coincide common cone construct contains curve cylinder denote describe diagonals diameter difference dihedral angles distance divided draw drawn edges ellipse equal equidistant equilateral equivalent faces fall feet figure Find formed frustum given line given point greater half height Hence homologous inches included inscribed intersection isosceles joining lateral legs length less limit locus measured meet middle point opposite parallel parallelogram pass perimeter perpendicular plane polygon prism PROBLEM Proof proportional PROPOSITION prove pyramid quantities radii radius ratio rectangle regular polygon respectively right angle segments sides similar sphere spherical square straight line surface tangent THEOREM third touches triangle vertex vertices volume