Ezekiel 43:16

And the altar shall be twelve cubits long, twelve broad, square in the four squares of it.

Exodus 27:1

And thou shalt make an altar of shittim wood, five cubits long, and five cubits broad; the altar shall be foursquare: and its hight shall be three cubits.

Exodus 38:1-2

And he made the altar of burnt-offering of shittim wood: five cubits was the length of it, and five cubits the breadth of it; it was foursquare; and its hight was three cubits.

2 Chronicles 4:1

Moreover he made an altar of brass, twenty cubits the length of it, and twenty cubits the breadth of it, and ten cubits the hight of it.

Ezra 3:3

And they set the altar upon its bases; for fear was upon them because of the people of those countries: and they offered burnt-offerings on it to the LORD, even burnt-offerings morning and evening.

Treasury of Scripture Knowledge

Summary

And the altar shall be twelve cubits long, twelve broad, square in the four squares thereof.

Square

Bible References

Twelve cubits

Exodus 27:1
And thou shalt make an altar of shittim wood, five cubits long, and five cubits broad; the altar shall be foursquare: and its hight shall be three cubits.
2 Chronicles 4:1
Moreover he made an altar of brass, twenty cubits the length of it, and twenty cubits the breadth of it, and ten cubits the hight of it.
Ezra 3:3
And they set the altar upon its bases; for fear was upon them because of the people of those countries: and they offered burnt-offerings on it to the LORD, even burnt-offerings morning and evening.

Square

Exodus 38:1
And he made the altar of burnt-offering of shittim wood: five cubits was the length of it, and five cubits the breadth of it; it was foursquare; and its hight was three cubits.