One triangle 26.3.1

一个三角形

Chinese 一个三角形

English One triangle

Spanish Un triángulo

Code: 26.3.1
Category: 26.3 Triangles, lines forming an angle
Version: Vienna Classification, 10th edition (VCL 10, in force from 1 Jan 2026); English from the WIPO official text, Chinese is a J&C reference translation