Hình 8-Tiết 54

9 12 7 8 P S Q N M   Câu 1(2 đim): !"#$$ %&'()*' Câu 2(3 đim):+,%)-./01/2031 2405146071/8846-9:*; <= >? -2017-2031-20@ -260AB1-2601@-260A 3- P N P M ; N Q P S = - M N M P ; Q S M S = 5- M N N P Q S P Q = Câu 3(5 đim):+,C.+%&D#C-E*/FG $ .+BFG$/C+BFG$.+- H +IC.+ !"#%J/- KH +I 7 0/-+ H LMN"OP$/+%J"OPC.+- "H +I 7 0/-+