Explanation 1 · Principles of Creation

The 28 letters of Jeongeum were created based on the
    principles of nature, modeled after the shape of the vocal
    organs and Wonsene(원세네: Won 원 Circle, Semo 세모
    Triangle, Nemo 네모 Square) symbolizing Hasattang(하사땅,
    Samjae Principle or the Three Principle: Hanul 하늘
    Heaven, Saram 사람 Human, Ttang 땅 Earth)1.




    1. The concepts of Hasattang and Wonsene are additions made by the editor, based
    on the overall context of the Hunminjeongeum Haeryebon.



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