crystal systems

Number of crystal systems having only 2 types of bravais lattices = x, number of crystal system having at least two interfacial angles equal = y and number of crystal systems having all the three edge lengths equal = z. Then find the value of x xx y xx z.

In a triclinic crystal system

Select the correct match about crystal system

Lattice|Unit cell|Types of unit cell|Types of crystal system

The relation a=b= c and alpha = beta= gamma = 90^(@) belong to the _______crystal system