1) Hexangular 2) Like typical snowflakes 3) Polygon 4) Polygonal shape 5) Six-sided 1) Hexangular 
• (a.) Having six sides and six angles; six-sided.
A crystal system having three equal axes at 60 degrees and a fourth axes perpendicular to the other three and unequal in length.
A recessed hexagon socket in the headd of a cap or set screw to add greater tightening and loosening power. Used with a Hex key wrench. (See Hexagon Head)
Hex·ag'o·nal adjective [ Confer French hexagonal .] Having six sides and six angles; six- sided. Hexagonal system . (Crystal.) 
( see crystal systems) Crystals forming under this system have 1 vertical 6 fold axis of symmetry 3 horizontal reference axis, equal in length and at 120 degrees to each other.