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Plz explain with diagram.  i)plane of symmetry  ii)center of symmetry   iii)an alternating axis of symmetry.

7 years ago


Answers : (1)


(i)plane of symmetry-when an imaginary plane can divide a crystal in such a way thateach part is exactly mirror -image of each other,then the crystal is said to have a plane of symmetry

(ii)center of symmetry-center of symmetry of a crystal is such a point that any line drawn through it,intersect the surface at equal distance in both direction

(iii)an alterating axis of symmetry-if a crystal is rotated around an imaginary line in such a way that it give same appearance more than once during one complete rotation,then this line is called an alternative axis of symmetry

7 years ago

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