HELP trying to figure out how to code buttons that match in VB 2012

[SJ Cummins]

I have started a game for a class project. being that I am new to VB It should be very simple. I used 16 buttons to cover 16 pictures and added a start button. I coded the button event handler to show the pictures when clicked, But now I'm trying to figure out how to code if btn1 and btn11 are clicked and are a match to make buttons invisible and pic invisable
I thought it would be something like thsi

If btn1.clicked and btn11.clicked then
   btn1.Enabled= False
   btn11.Enabled = False
   Pic1.visable =False
   Pic11.visable =False
end if 
 

But btn1.clicked can not be used
can anyone help me.. Please