Name the parameters that characterized a unit cell.

Explanation

A unit cell is characterized by the following two parameter:
(a) The dimensions of the unit cell along three edges. These are represent by a,b, and c. The edges may or may not be mutually perpendicular.
b. The angles between the edges. These are represented by `alpha, beta`, and `gamma`. The angles `alpha` is between b and c, `beta` is between a anc c, and `gamma` is between a and b.