select one vertex but get 2 vertex

[Anonymous]

dear community,

i am newbie here

i want to ask something about vertex

when i select vertex from top-Y view , i selected 1 vertex from Y but why its selected Z one in vertical position?

i use maya 2018

sorry for my bad english :"(

[mspeer]

Hi!

You have Symmetry enabled.

[Anonymous]

ty sir!!!! 😄