pinge, mis tuleneb keemilise sideme nurga kõrvalekalletest „normaalsete“ väärtustega võrreldes. Kasutatakse sageli mittearomaatsete tsükliliste ühendite puhul, tähistamaks kõrvalekallet tetraeedrilisest nurgast 109°28´ (Baeyer´i pinge), strain due to a departure in bond angle from 'normal' values. The term is often used in the context of non-aromatic cyclic compounds in which the internal angles differ from the regular tetrahedral angle of 109⚬28′; in this sense angle train is also known as Baeyer strain