noun which may take the genitive case particle 'no', na-adjective, noun
square; perfectly square
Describes something that is exactly square in shape, often with emphasis on precision. Used as a noun or adjectivally with の or な.
このテーブルは真四角だ。
This table is perfectly square.
I'm looking for a square box.
A perfectly square box was placed on the table.
I cut the paper into a perfect square to make note paper.