'Four square' in the Bible

"You shall make the altar of acacia wood, five cubits long, and five cubits broad; the altar shall be foursquare: and its height shall be three cubits.

The mouth of it within the capital and above was a cubit: and its mouth was round after the work of a pedestal, a cubit and a half; and also on its mouth were engravings, and their panels were foursquare, not round.

He measured the court, one hundred cubits long, and a hundred cubits broad, foursquare; and the altar was before the house.

All the offering shall be twenty-five thousand by twenty-five thousand: you shall offer the holy offering foursquare, with the possession of the city.