The Elements of Geometry

altitude axis base bisected bisector Book called chord circle circular circumference circumscribed common cone construct contains cylinder denote diagonals diameter difference dihedrals distance divided Draw drawn edges equal equilateral equivalent EXERCISES extremities faces figure Find fixed four Geometry given circle given line given point greater half homologous inches included increased inscribed intersect isosceles triangle lateral length less limit locus lune magnitudes mean measure median normal NOTE opposite parallel parallelogram passes perimeter perpendicular plane polyhedral polyhedron prism PROBLEM Prop proportional PROPOSITION Prove pyramid radii radius ratio rectangle regular polygon respectively right angles right triangle sector segments Show sides similar solid sphere spherical spherical triangle square straight line surface tangent tetrahedron THEOREM third trapezoid triangle triangle ABC trihedral unit variable vertex vertices volume zone