octagon
Koj tuaj yeem pom txhua yam nthuav txog lub ntsiab lus octagon hauv cov npe hauv qab no. Cov kab lus no muaj feem xyuam nrog lub ntsiab lus octagon uas koj tau tshawb nrhiav. Ntawm no koj yuav pom cov lus tseeb thiab nthuav tshaj plaws txog Octagon.
