Koch curve; Koch snowflake; Koch island
A fractal curve introduced by Helge von Koch. In Japanese, コッホ曲線 refers to the curve itself, while コッホ雪片 (Koch snowflake) is a specific closed form. The term コッホ島 is less common but understood in mathematical contexts.
The Koch curve is one of the self-similar fractal figures.
We learned about the dimension of the Koch curve in math class.