Elements of Geometry

ABCD altitude angles are equal approaches base bisects called centre chord circle circumference circumscribed coincide common cone construct contains corresponding cylinder describe diagonals diameter diedral angles difference distance divided draw drawn edges equal equivalent Exercise Exercise.-The extremities faces fall figure Find formed four frustum given given point greater half Hence homologous hypotenuse included indefinitely inscribed intersection isosceles joining lateral area length less limit mean measured meet method middle point parallelogram parallelopiped passed perimeter perpendicular plane polygon prism proportional PROPOSITION PROVE pyramid Q. E. D. PROPOSITION radii radius ratio rectangle regular polygon respectively right angles right triangle segment sides similar sphere spherical square straight line surface symmetrical tangent THEOREM third triangle ABC triangular unequal unit vertex vertices volume