| A Rhombohedral unit cell satisfies which of the following equations?

A. a=b=c, α=β=ϒ=90 degree

B. a≠b=c, α=β=ϒ=90 degree

C. a=b≠c, α=β=ϒ=90 degree

D. a=b=c, α=β=ϒ≠90 degree

### Right Answer is: D

#### SOLUTION

Rhombohedra have all sides equal and all angles equal but not 90 degrees.