What do these figures share in common?
1 Answer
$\begingroup$
$\endgroup$
1
They share in common
Identical pairs or single squares which are CONCEALED!!
Reason
If you look at the parts of the squares concealed and draw them out, one sees that it spells the letters ‘CONCEALED’:
According to the OP: For the 6th its a pair (one on top of the other)
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1$\begingroup$ Nice job! For the 6th its a pair though (one on top of the other), making it look more like that letter $\endgroup$ Commented 2 hours ago