Word: 三角 (sānjiǎo) 三角 dictionary entry sānjiǎo triangle; trigonometry (abbr. for 三角學|三角学[san1 jiao3 xue2]) Full dictionary entry for 三角 Example sentences using 三角 2 sentences, showing page 1 of 1. 我最头疼数学里的三角。 Wǒ zuì tóuténg shùxué lǐ de sānjiǎo. The part of math I find most painful is trigonometry. 请在纸上画一个三角。 Qǐng zài zhǐ shàng huà yí gè sānjiǎo. Please draw a triangle on the paper.