Relations between cosmological redshift z and angular length ϕ for six giants of different projected lengths l_p. Due to the expansion of the Universe, there is a minimum angular length for each l_p. If one defines giants as RGs with l_p ≥ l_p, GRG = 0.7 Mpc, all giants have an angular length of 1.3′ or above. If one instead defines giants as RGs with l_p ≥ l_p, GRG = 1 Mpc, all giants have an angular length of 1.9′ or above.