tia Oy nam giua 2 tia Ox va Ozta co 2 goc ke nhau la

Question

tuminh2 · Answer

Hai g&oacute;c kề nhau l&agrave; xOy v&agrave; yOz     Xin hay nhất

diemchau · Answer

Hai g&oacute;c kề nhau l&agrave; hai g&oacute;c xOy v&agrave; yOz       Cho m&igrave;nh xin hay nhất       @thanhtruc5496       #WE ARE NUMBER ONE