Monday, June 16, 2014

Rhomboidal Stones

Rhomboidal Calcite Crystal 
       Rhomboid: “Traditionally, in two-dimensional geometry, a rhomboid is a parallelogram in which adjacent sides are of unequal lengths and angles are non-right angled. A parallelogram with sides of equal length is a rhombus but not a rhomboid (Wikipedia).
The adjective rhomboidal refers to both Rhombus and Rhomboid shapes.
As in: "Hey Jeff! I observe that there is a rhomboidal stone artistically placed in a stacked row of stones on the edge of an outcrop at your Flickr Photostream."

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