A Text-book of Geometry

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