'Square' in the Bible

“And you shall make the altar of acacia wood, five cubits long and five cubits wide; the altar shall be square, and its height shall be three cubits.

It shall be square and folded double, a span in length and a span in width.

Its length shall be a cubit, and its width a cubit, it shall be square, and its height shall be two cubits; its horns shall be of one piece with it.

Then he made the altar of incense of acacia wood: a cubit long and a cubit wide, square, and two cubits high; its horns were of one piece with it.

Then he made the altar of burnt offering of acacia wood, five cubits long, and five cubits wide, square, and three cubits high.

It was square; they made the breastpiece folded double, a span long and a span wide when folded double.