  Based on the present data, the three CKM angles may construct a spherical
surface triangle whose area automatically provides a "holonomy" phase. By
assuming this geometrical phase to be that in the CKM matrix determined by an
unknown hidden symmetry, we compare the theoretical prediction on $\epsilon$
with data and find they are consistent within error range. We also suggest
restrictions for the Wolfenstein parameters explicitly, the agreement will be
tested by more precise measurements in the future. At least we can claim that
such geometrical phase should be part of the weak phase appearing in the CKM
matrix, even not the whole.
