Distinct Angles and Angle Chains in Three Dimensions. - Ruben Ascoli; Livia Betti; Jacob Lehmann Duke; Xuyan Liu; Wyatt Milgrim; Steven J. Miller 001; Eyvindur A. Palsson; Francisco Romero Acosta; Santiago Velazquez Iannuzzelli (Discret. Math. Theor. Comput. Sci., 2023)