第1章 立体几何初步（练案二）-2020年高中同步教与学数学（江苏版必修2）

书书书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`5<S'5TA<4.C ! abcd % CV5<S &! 5TA <bdc'V ! e! ) +#$> ! QRfg'( !!!! ! ! CV5<S'Vh@,Ei'J4.C " " CV5<S'A,h@,Ei'j,J4.Ck-l " # CV5<S'@,567mn\opq " $ CV5<S'3Z[m\rWs,t ! " !"# # ! $,&'()* +! !"U+#$ ! 1>%&') !!!! + ! ! uW+/,vw<S ! <S@,xw,yz'{|(<} " " *+@,/0G.~ ! 123,4(�7'�,:(<} " # )*+,-./0 ! 125+,4(CV�7'D,:(< } ! " -.# ! ! /01234512&67 ,! ��L>%UJ7����� ! �e��W+ !!!! ! " -.# " ! 89:5;&'(<=>? -! W+FN:�WZ['U+,',�|�d槡"!槡(!槡%!�+ FN:'IJ�'F( !!!! ! !&! *+��.r'FN: ! F ' � ' �|�d *./ ! )./ ! (./ ! �c���\W��iW+�FN: ! \���FN:> ! � �F'IJ�'F� ! !!! KL ! ��%5<S &#"#$% ! @,,�d !% ! WTA<F d 槡" !!!��c'�x �! ( ! ( !" !!! #$ !!!!!!!!!!!!!!!!!!!!!!!!! %&'()*+ ! ,- " . # " @A# ! 4=BC5&D5EF !"! ��W+U<S'�d ' ! @,,�d ( ! uW+/0¡<S'@,'/,vw< S ! ��¢<S'�d ' ! ! @,�d ( w ! KLEM ! # ! $ �£ ) ( w ( $ ' ! # $ ' " " # " $ �<S¤w,|i*{|'A,',�y¥ ! ( " ( !" !!! #$ !!!!!!!!!!!!!!!!!!!!!!!!! %&'()*+ ! ,- " . # !!!!" ! -' ! -( ! -*). " ! +, # " !"# ! ! G% ! G+HG,&'()* !! q= ' qS ' q}'¦w, # §¨©¦'w, $ |�( !!!! ' !!!! ' !!!! ! "! !"#$>'QRfg'( !!!! ! ! eª7'W6E\«�d¨©¦ ! 12U6¨©7i'¬, E­i'89:;q= " " e«JUJ7'WT6E\«�d¨©¦ ! 12*6¨©7 i'¬,­i'89:;qS " # e«JUJ7'WT«J6E\«�d¨©¦ ! 12*6¨ ©7i'¬,­i'89:;qS " $ eCVUJ7'@6t'�E\«�d¨©¦ ! 1236¨ ©7i'¬,­i'89:;qS ! (! e!#$%&'( !!!! ! ! «JUJ7®W6E\«�¨©��'¨©:(qS " " ¯\q='*+/0w,z'89:°(q= " # qSwvW+¢qS±²2{|(q} " $ <SwvW+¢<S±²2{|(<} ! " !"# " ! I&'()* )! ³q®´«µ¨©W¶E�'89L7( !!!! ! *! ��³µd * 's'*+/0w,'¶F|�d % % x , % ! H */0/,z'·¸d !!!! ! " !"# # ! J.;&KLMN %! W+%N:¹p¡W+s ! §s_ºWw, !