"K" is an imaginary plane which divides a crystal into two equal halves which are the exact mirror images of each other. The proper term for "X" is
"K" is an imaginary plane which divides a crystal into two equal halves which are the exact mirror images of each other. The proper term for "X" is
Explanation
The proper term for "X" is Plane of symmetry.
A plane of symmetry is an imaginary plane that divides a crystal into two halves, where each half is the mirror image of the other.