「基本折り」

Basic Folding

1 Fold the bottom corner to meet the top corner.
2 Make a crease and return it to its original position.
3 Rotate the paper 90 degrees, fold the other pair of corners together, make a crease and return it to its original position.
{Flip}
4 Rotate the paper 45 degrees and fold the bottom edge to line up with the top edge.
5 Make a crease and return it to its original position.
6 Rotate the paper 90 degrees and fold the other pair of edges together.
7 Hold the crease ▲ made in step 6 with your fingers and fold gently from both sides together.
8 Let the paper naturally fold along the creases to form the shape of 9.
9 A basic square is created.

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10 Change the top and bottom positions.
With the opening facing downwards, fold the bottom left and right edges to meet the crease in the middle.
11 Make a crease and return.
12 Fold the top at the point where the crease made in 11 intersects with the top left and right edges.
13 Make a crease and return.
14 While opening the front paper upwards, fold the left and right edges inward along the crease made in 11.
15
16
{Flip}
17 Make creases on this side in the same way as 10 and 11.
18 Fold in the same way as 14, 15 and 16 to form 19 and 20.
19
20 The basic fold is complete.