How to make an envelope with a4 paper

Make an envelope with A4 paper steps are as follows:

1, first of all, prepare a piece of A4 paper, folded horizontally, and then unfolded, this time there is a horizontal line of symmetry in the middle of the A4 paper, the short side of the two corners of the line of symmetry folded along the line of symmetry, the two corners of the folded inward; as follows:

2, the other side of the short side of the triangle continue to fold; the corner of the left corner of the A4 paper continue to folded inward, with just the Folding intersects. The following picture:

3, flip fold; turn the paper to the other side and fold the irregular edge inward. The following picture:

4, continue to flip; then flip the A4 paper to the other side, insert the excess into the envelope can be. The following picture:

5, so an envelope is completed.