角柱

1. Origins, structure, and basic meaning

• Structure: 角柱 is read as かくちゅう and is a noun for a prism with polygonal bases or an angular pillar.
• Basic usage: A solid with a triangular base appears in 底面が三角形の角柱, while an actual stone pillar appears in 石の角柱.

2. Common pitfalls and similar expressions

• Geometric solid and physical pillar
  • In mathematics it denotes a prism with polygonal bases, while in a garden or building context it can denote an angular pillar.
• Difference from 円柱
  • 円柱 is a cylinder with circular bases, whereas 角柱 is a prism whose bases are polygons with corners.