Definition: "3c589" is a Hebrew term for "sevenfold circle," which means seven circles on a circle, typically in geometry or mathematics. Definition: A sevenfold circle refers to a geometric figure formed by seven concentric circles, each containing an equal number of points as the outermost. This concept is particularly important in Euclidean geometry, where it serves as a fundamental part of the construction of regular polygons, such as regular tetrahedron and regular dodecahedron. It's essential for understanding concepts like triangulation, where you're using similar triangles to construct shapes from larger ones.