Our previous work correlated bond angles of group V and group VI hydrides (AH[subscript 3]E and AH[subscript 2]E[subscript 2], respectively, where E represents a lone electron pair) to the electronegativities of the atoms using the fraction of s character to relate the two. Here we have extended the correlation to the AH[subscript 2]X[subscript 2] series, where A is a group IV atom, carbon, silicon, or germanium and X is hydrogen, fluorine, chlorine, bromine, or iodine, treating each "X" as an individual series. These group IV series are correlated to each other by the atomic radius and electronegativity of the "X" (halide or hydrogen) atom, yielding a single relationship for all of fourteen compounds. The results support three assertions (and their corollaries) that allow students to predict relative hybridization and, thus, bond angles of these dihalides based on readily available electronegativity values. (Contains 2 tables and 2 figures.)