Triangle Basic is very important and very useful for making origami paper art. For example, it is able to start Kite Basic Origami, etc.. Because it is a basic origami technique. So, prepare a piece of origami paper to make this.
1. Find the diagonal line on its paper. On the picture below, marked by a line that connect two different corner.
2. Fold it through the diagonal line.
3. And it is the result. It is form is like a triangle. So it is called triangle origami. It also used to make another origami art.