Where does “칠각형” come from?

칠각형 (Korean) comes from Chinese 七, from Proto-Sino-Tibetan s-ni-s — seven.

칠각형 (Korean): heptagon

Definitions

  1. heptagon

Ancestry of “칠각형”, step by step

StepLanguageWordMeaning
1Chinese七—
2Proto-Sino-Tibetans-ni-sseven
Every word from Proto-Sino-Tibetan s-ni-s →Every word from Chinese 七 →