A construction member, comprising an elongated body having a longitudinal
dimension with a first end and a second end. Complementary end rotational
joint portions are provided at the first end and at the second end of the
elongated body, for interconnecting first end to second end a plurality
of the construction member so as to form a polygon with construction
members. A longitudinal rotational joint portion is provided in the
longitudinal dimension of the elongated body for interconnecting two
longitudinally adjacent ones of the construction member so as to
interconnect polygons of the construction member at a common edge of the
polygons to form a polyhedron.