A Text-book of Geometry

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