六角形

1. Origins, structure, and basic meaning

• Structure: 六角形, read ろっかくけい, is the geometric noun hexagon.
• Basic usage: 六角形の部屋 describes honeycomb cells as hexagonal; 六角形を三つ作る counts three shapes made from paper.

2. Common pitfalls and similar expressions

• A six-sided shape
  • 六角形 is a polygon with six sides and six vertices. Instances are counted as shapes; the 六 in the name describes the sides of each one, not the number of shapes.