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A comment on My Love Affair with Dozens (1972) [pdf]. Parent comment

Re:My Love Affair with Dozens (1972) [pdf] by hervature on Monday April 19, 2021 @08:24PM (#26869379)
You can do that with the square itself.
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Re:My Love Affair with Dozens (1972) [pdf] by thechao on Tuesday April 20, 2021 @07:26AM (#26873183)
You can check the corner is square with a square. Checking the walls and the room can be done with a string.
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