The Elements of Solid Geometry

ABC and DEF altitude axis base base and altitude bounded called centre circle circumference coincide common cone construct COROLLARY corresponding cube cutting cylinder DEFINITIONS diagram diameter diedral angle distance divided draw drawn equal with respect equivalent face angles feet follows formed frustum greater Hence included inscribed intersection lateral edges lateral faces lateral surface less limit lune manner measure mutually equal oblique opposite parallel parallel planes parallelopiped pass perimeter perpendicular plane plane MN polar triangle pole polyedral angle polygon prism Problem PROPOSITION prove pyramid radius regular regular polyedrons represent respect right angles right prism right section SCHOLIUM shown sides similar solid sphere spherical triangle squares straight line surface symmetrical termed THEOREM triangles ABC triedral vertex vertices volume wedge