Write the symmetries associated with the following 2-D defects:
i) Grain Boundary
ii) Twin Boundary
iii) Stacking Fault
Grain boundaries are two-dimensional defects that separate crystals of the same phase but with different orientations. They possess rotational symmetry depending on the misorientation angle between the grains, ____ _______ ___ _________ ________ _______ __________ _______ __________ _________ _____.
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