5 Free PNG images of Crystallographic Symmetry Symbols

unspec svg created with inkscaperotation symbols
4-fold rotation axis
unspec svg created with inkscapeself-published work
Inversion center
red circleno symbol
3-fold inversion axis
unspec svg created with inkscapeself-published work
6-fold inversion axis
unspec svg created with inkscapeself-published work
3-fold rotation axis
geometric shapegeometry
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