Definition

1. Noun (Mathematics):
   • Hexahedron: A solid geometric figure with six faces. A cube is the most common and regular example of a hexahedron, where all faces are squares and all angles are right angles.

Usage Examples

• Noun:
  • Hình lập phương là một lục diện đều. (A cube is a regular hexahedron.)
  • Bài toán yêu cầu tính thể tích của lục diện này. (The problem requires calculating the volume of this hexahedron.)

Advanced Usage

• The term is primarily used in academic, mathematical, and geometric contexts. It is not commonly used in everyday conversation.

Variants and Related Words

• Hình lục diện: Hexahedral shape.
  • Anh ta đang nghiên cứu về các hình lục diện. (He is researching hexahedral shapes.)

Synonyms

• Hexahedron: The direct English equivalent in geometry.
• Six-faced solid: A descriptive synonym.

Notes

• "Lục diện" is a compound Sino-Vietnamese word where "lục" means "six" and "diện" means "face" or "surface." It refers exclusively to a three-dimensional polyhedron.
• It is important not to confuse "lục diện" (hexahedron) with "lục giác" (hexagon), which is a two-dimensional shape with six sides.

1. (toán) Hexahedron