This work deals with misfit angles, which are observable in ferroelast
ic phase transitions. In the literature the misfit angles were calcula
ted for six different ferroelastic phase transitions, where there is o
nly one possible misfit angle. In this work the method for obtaining a
ll misfit angles (for the cases where there is more than one possible)
is introduced. Also the expressions for all possible misfit angles fo
r each ferroelastic species are given.