The Elements of Solid Geometry

ABC and DEF ABC-B altitude are equal axis base and altitude bases are equal bisecting centre circle circumference coincide common altitude common vertex conical surface COROLLARY cube cuboid DEFINITIONS diameter dicular diedral angle EDC-O equal with respect equivalent faces are called feet Find the volume frustum Hence inscribed prism intersection lateral edges lateral faces lateral surface Let the line line BA lune MN and PQ mutually equal O-ABCD oblique parallelopiped one-third the product parallelogram pass perimeter perpen perpendicular to MN plane angle plane PQ polar triangle polyedral angle prisms whose bases PROPOSITION radii radius regular polyedrons regular polygon regular pyramid right angles right circular cone right prism right section SCHOLIUM similar slant height sphere spherical angle spherical excess spherical polygon spherical triangle straight line tetraedron THEOREM triangles ABC triangular prism triangular pyramids triedral