Fig. 717.01 Single and Double Bonding of Members in Tensegrity Spheres: A. Negatively rotating triangles on a 270-strut tensegrity geodesic sphere with double-bonded triangles. B. A 270-strut isotropic tensegrity geodesic sphere: single bonded turbo triangles forming a complex six-frequency triacontahedron tensegrity. C. Complex of basic three-strut tensegrities, with axial alignment whose exterior terminals are to be joined in single bond as 90-strut tensegrity. D. Complex of basic three-strut tensegrity units with exterior terminals now joined.