Symmetry groups {hexagonal} can have rotation by 60 degrees. Hexagonal crystals have one six-fold axis, with one axis perpendicular to the other two axes but with different length, and two axes with same length at 60-degree angle to perpendicular axis, and makes seven crystal classes.
Physical Sciences>Chemistry>Inorganic>Phase>Phases>Solid>Crystal>Symmetry
5-Chemistry-Inorganic-Phase-Phases-Solid-Crystal-Symmetry
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Date Modified: 2022.0224