khối thang
Definition
- Noun (Geometry):
- Trapezohedron: A solid figure (polyhedron) whose faces are trapeziums or trapezoids. In crystallography, it is a form whose faces are trapeziums.
Usage Examples
- Noun:
- Tinh thể thạch anh thường có dạng khối thang. (Quartz crystals often have a trapezohedron form.)
- Khối thang là một hình học không gian phức tạp. (The trapezohedron is a complex solid geometry figure.)
Advanced Usage
- In mathematics and crystallography, "khối thang" specifically refers to a polyhedron with trapezium-shaped faces, which is distinct from a simple trapezoidal prism.
Variants and Related Words
- Hình thang (n): trapezium (a 2D shape).
- Cô vẽ một hình thang trên bảng. (She drew a trapezium on the board.)
- Lăng trụ hình thang (n): trapezoidal prism.
- Mô hình này là một lăng trụ hình thang. (This model is a trapezoidal prism.)
Synonyms
- Trapezohedron (primary geometric term).
Notes
- "Khối thang" is a specialized term used primarily in geometry and crystallography. It is not commonly used in everyday conversation.