This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

adj. Of, or relating to geometry; geometric.

adj. Consisting of lines and simple shapes.

adj. of or relating to or determined by geometry

adj. characterized by simple geometric forms in design and decoration

"In the work Kepler discusses harmony and congruence in geometrical forms and physical phenomena."

nonrepresentational   

at a geometrical ratio    geometrical ratio   

asymmetrical    metrical    obstetrical    symmetrical   

geometric    mathematical    quantitative    anatomical    statistical    structural    arithmetical    astronomical    precise    grammatical