दी गई आकृति में त्रिभुज की संख्या ज्ञात कीजिए।
In the figure the simplest Triangles are GLK, DLJ, DJM,HMN,QRE,IRA,IPA, and FPO is the 8 triangle
and another is BDO,CDQ,DLM, PRA, KFI, NEI, HJI, GJI,DKI, and DNI is the 10 triangle
and another is DIE, DFI, DOA, DQA, and GHI is the 5 triangle
and DCA, DBA is the 2 triangle and DEF and ABC so that according to the figure the total no. of triangle is 8+10+5+2+1+1=27