bát diện
Definition
- Noun (Geometry):
- Octahedron: A three-dimensional geometric solid (polyhedron) with eight faces. Each face is typically an equilateral triangle, and it is one of the five Platonic solids.
Usage Examples
- Noun:
- Hình bát diện đều có tám mặt là tam giác đều. (A regular octahedron has eight faces that are equilateral triangles.)
- Anh ấy đang học về tính chất của khối bát diện. (He is studying the properties of an octahedral solid.)
Advanced Usage
- "bát diện đều": regular octahedron.
- Kim cương thường có cấu trúc tinh thể dạng bát diện đều. (Diamonds often have a crystal structure in the form of a regular octahedron.)
Variants and Related Words
- Khối bát diện (n): octahedral solid, octahedron.
- Mô hình này minh họa một khối bát diện. (This model illustrates an octahedral solid.)
Synonyms
- Octahedron: The direct English equivalent.
- Eight-faced polyhedron: A descriptive synonym.
Related Concepts
- Platonic solid: A regular, convex polyhedron. The octahedron is one of them.
- Polyhedron: A solid figure with many flat faces, of which an octahedron is a specific type.