Question

The rhombohedron has:

• A. Vertical symmetry planes
• B. Diagonal symmetry planes
• C. Horizontal symmetry planes
• D. Horizontal symmetry and diagonal symmetry planes

Hint:

Rhombohedron is commonly associated with diagonal symmetry planes.

Answer 1

The Correct Option is B

Concept:
Rhombohedron is a form related to the trigonal division of the hexagonal crystal system.

Step 1: Identify the symmetry.
A rhombohedron has symmetry planes that are diagonal in nature.

Step 2: Eliminate other options.
It is not mainly characterized by horizontal symmetry planes. The important symmetry planes associated here are diagonal symmetry planes. \[ \text{Rhombohedron} \Rightarrow \text{Diagonal symmetry planes} \] \[ \therefore \text{Correct Answer is (B)} \]