第1章 立体几何初步（学案一）-2020年高中同步教与学数学（江苏版必修2）

书书书 ! ! " ! #$%&'( !"! ! !"#$% !"!"! ! &' ! &()&* " ! +, # !! !"# !" $%&'()* # +,-./01 $ 234567 8 # !9!:;<= " % >?@ABC-DEFG # HIJKLG MNOPQRHSC:& & :$T:UVWXY # Z@H[\! ]^C_`abcd " !! e f g # ? @ h i j k W X Y ! jkWXYCX $ jkWX YC: $ jkWXYC%l ! #! hemWXYCnoemXpqr2X # stuvCHmXw >xm2XC^ey # xzCWXYjk ! $! !{mX|}23 # uvHXC~��|}23CWXYjk ! {m|}23CXjk # ��� $ uv HXjk:&C $ }�{myXC~��jk:& C $ y X � � X C ~ � % l j k : & C ! %! :&���X���� ! �X� C:&�� jk�:& & �:& & �:& '' &! :&Cabcd ! ! $ " $ # :&CHy:}V # HyXw�23��Q ! '! efg # emX�W�Q # uvHXw� C�9Q # ix�X���CWXYjk:$ ! W�QXjk:$C $ ! ~ � % l C H m � 9 Q j k : $ C $ HyXC~�%ljk:$C $ }� yXC~��jk:$C ! (! :$��X���� # �X��9Q & ��Q & ��QC:$� �jk & & ! )! :$Cabcd ! !!!!!!!!!!!!!!! $ "!! !!!!!!!!!! ! *! �em23�:$�XC2X��:$ # j k:U $ �:$C�XT�X��jk:UC $ u vHXjk:UC $ �X�yXC~�ljk:U C $ }�yXC~��jk:UC $ : U��X����:U & �:U & �:U '' -./0 ! &'12345 !! !"#$% !! efg # !{mX|}23 # uvHXw�23��Q # �� �}�{m��QC~��w|}23 # ix�X���CWX Yjk:& ! >:&G # {m|}23CXjk:&C�X # �� � $ uvHXjk:&CyX $ }�yXC~��jk:&Cy : $ yX��XC~�%ljk:&C%l ! s�� ( ! ) ! !! ( ! ) ( # ) 67 ! ! ! " !"#$%&'( # )*+#$,-'(./0 # 12$3456$789:-;< ! =>? ! # " 56$7@A1 "#BC # DE8-;< # FG # HIJ:9#6$7-KL;< M # NOPE-K@A $ !"#$%&'( # )*+$,-'(. /0 % 1"#BCQR # STUV)*'(./0W $ X&Y"# ./05Z[/,%&'( % \ $ ];%&'( % 19BC # 8^ _19BC56$7`8-;< ! ! # " ;<5ab & c$-de0 ' ./0 ' f/0 (( 5;< aghid;< ' .;< ' f;< (( ! $ " ;<5jk & ! lmnc$+op5qrmn;< ! =? ! ! " WsmnL;< "#$%&'+"(#($(%(&('( ) " l;<5te umn;< ! ! % " vwxy?0M # zP{5uBw4|u # 8zP{5u Bw4}u ! ~!1�w�z�g�2uBzP�{ # �2P8 { # �^!�7� ! 1-�w'$?058�Q� ! '$?05} umn��u " ! !! &'() !! $ 8 ! % ! ��� ¡¢�£¤¥ ! ( ! ) :&CHmyXw�23��Q $ ( # ) em ) ( ) " $ ) :&�! #) m%l $ ( $ ) :&C{m�X�¦VCW�Q $ ( % ) st:&!emyX�§Q # ¨uvHyX/w�§Q ! 9: ! �;<5:�s� # ;<5+];%&'( # �9# ]$�"Bc/�%&'( # ��+]$,-'(./0 ! 9# ) ;<5c$-9# ) /0 # FGX#c$,! ) #op # "# c$5op�Q�L;<5op� # \ #) # ! FLv�9#]$ �5"Bc/'(�&� # ��;<5"#c$5t�/'( �&� # �;<5"#c$�� ! =�;<!9#]$-�0 # ~ z��];��� ]$5c/ # )*]$5];�&�c/ 89:�� # FG)*]$89:-�0 ! ;< ! ( ! )(