1.

The interracial angles of a triclinic crystal system are given by __________

A. α = β = ϒ = 90o
B. α = β = 90o ϒ = 120o
C. α = β = ϒ ≠ 90o
D. α ≠ β ≠ ϒ ≠ 90o
Answer» E.


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