Origami is the art of paper folding (or put art paper) originating from Japan. The word in Japanese origami is derived from two words: oru folding or loading paper and kami. Origami only been used since 1880; earlier, the Japanese used letters orikata. Simple combination of folding origami to turn rectangular piece of paper (two-way), which is usually square, into the complex (3-way), do not cut and paste in the folding process, this is also the trend of modern origami. Unlike people often think, the Japanese traditional origami rules (starting around Edo Dynasty 1603-1867), less strict modern origami: folding paper can be round, triangular, and can cut and paste in the folding process.