Estimated minutes: 10 min
Designer: Tomoaki Hamanaka
The fundamental cube form. A basic structure for understanding the relationship between faces and corners.
Parents

Obtuse Triangular Pyramid
A flattened triangular pyramid whose apex solid angles are all 90 degrees. It is used as a fundamental element for forming the vertices of cubes and rectangular prisms.

Acute triangular pyramid
A slender triangular pyramid with a sharply elongated apex, offering strong structural stability. On its own, it is well suited for creating horn-like forms. By combining multiple units, it can be extended into solid structures such as cubes and square pyramids, making it a highly versatile structural element.
Children

Nested Cube
A structure in which a cube is placed at the center of a recessed rectangular prism. A composite component created by combining a banded cube with a basic cube.

Inverted Cube
A structure created by turning the internal structure of the basic cube outward. It allows for decorative expressions in which triangular prisms surround the cube.