How to make a square box with paper is as follows:

1, prepare two pieces of A4 paper (you can also use colored paper), a pair of scissors, a pencil, a glue.

2, first fold one of the corners of the paper, and use a pencil to draw a line along the edge of the folded corner.

3. Cut the paper along the line drawn by the pencil.

4. Once you get a square piece of paper, fold the other two in half as well to have an X-shaped crease.

5. Fold each of the four corners towards the center of the X shape.

6. Fold the top and bottom sides in half.

7. Fold the left and right sides in the same way as in step 6, so you get four triangles turned outward, and then use scissors to cut along the fold line to the bottom edge of the turned out triangles.

8. Cut the other fold lines in the same way.

9. Open the left and right sides, and stand the top and bottom sides at 1/3.

10.Fold down the top triangle.

11, the bottom triangle also folded in, so the box is done.

12, the lid is folded in the same way, but you need a slightly larger piece of paper in order to put the lid on.

13, cover the lid, so a square paper box is folded.

Expansion:

The definition of a square is that a rectangle with equal length, width and height is a square.

A three-dimensional figure surrounded by six identical squares is called a square. A straight parallel hexahedron with square sides and base is called a square, i.e., a hexahedron with all the prongs of equal length, also known as a cube and an orthohexahedron.

Squares are special rectangular bodies. The volume of a square (or called the volume of a square) = prism length * prism length * prism length; let the prism length of a square be a, then its volume is: V = a*a*a or equal to a. A three-dimensional figure enclosed by six identical squares is called a square. A straight parallel hexahedron with square sides and base is called a square, i.e., a hexahedron whose prongs are all of equal length, also known as a cube and an orthohexahedron. A square is a special kind of rectangular body. It has 6 faces, 8 vertices, and 12 prongs.