13.2画轴对称图形－八年级上册初二数学【教材解读】(人教版)

�D�z78-;-�[R-n_6!k lK!#!!.1+�-_)ö÷! lK!#!!.1 !#!"!#9:!&'_)(&'-è­�[R� -_!+,)&,)'! �&'_)('(-è­�[R�-_! +,)',)(!+,)&,)',)(! ""#+!_)>p4&(-è­�[R�! '(&:;<:4-è­�[R�no�_! T i�_L:;<:S`_-"#�9! !#!"!HCDEI$ ij%g)0h& !µ¶$x·y-��K<NR](­R(ò R(:;<(¿4<�"9!Ài}K<do ­R-Â+K<-À»k�& R]&¡ÀÁR]DSû_do­R>- +_!HÐÑiDSÂ+_$ ­R&¡ÀÁ­R�K#D_do­R>- Â+_!HyiDSÂ+_®­R$ òR&¡ÀÁòR-û_#�û_CòR �-K#�_do­R>-Â+_!H,û _-Â+_'û_yB�_-Â+_® òR$ :;<#¿4<&¡À:;<#¿4<j `_do­R>-Â+_!HUWÐÑj +_$ "&¡ÀÁ"õdo­R>-Â+_!H, Â+_'"õ!,Õ¸"-/$'/$ À"! fM%g)1h& !!+!klK!#!".!! lK!#!".! "!no!ÂoAÏ-:;<%NAÏ-'¢! ij%g)5h& !&'&­'�(­'doM*R"�6*# Â+! (­'-RS'"#!*!+#!+,&­ '-RS'"&#!*!+#! fM%g0'h& !!+!"&"!)#do"*Â+-_-RS' "&"!&)#!do6*Â+-_-RS'""!)#$ "!!&"#do"*Â+-_-RS'"!!"#! do6*Â+-_-RS'"&!!&"#$ "&!!##do" *Â+-_-RS' "&!!&##!do6*Â+-_-RS'"!!##$ "&+!&"#do" *Â+-_-RS' "&+!"#!do6*Â+-_-RS'"+!&"#$ "!!'#do"*Â+-_-RS'"!!'#!d o6*Â+-_-RS'"&!!'#! "!+!_'-RS'"!!"#! #!+!&"&+!!#!'"&!!&!#!("&#!"#do "*Â+-_-RS[\'&8"&+!&!#! '8"&!!!#!(8"&#!&"#!do6*Â+- _-RS[\'&?"+!!#!'?"!!&!#! (?"#!"#! plK!#!"."!M!$&8'8(8�$&'(d o"*Â+!plK!#!".""M!$&?'?(? �$&'(do6*Â+! ! " lK!#!"." !% M/!#!"%g0!h& !!+!klK!#!".#! lK!#!".# "!+!"#!)#do"*�6*Â+-_-RS [\'"#!&)#!"&#!)#$ "&0!5#do"*�6*Â+-_-RS[ \'"&0!&5#!"0!5#$ ")!&!#do"*�6*Â+-_-RS[ \'")!!#!"&)!&!#$ "&#!&*#do"*�6*Â+-_-RS [\'"&#!*#!"#!&*#$ "'!!'#do"*�6*Â+-_-RS[ \'"'!&!'#!"'!!'#! #!+!_'!(!* -RS[\'"!!&!#! "&!!&!#!"&!!!#! $!+!lK!#!".+M-$&8'8(8�$&?'?(? [\'$&'(do"*�6*Â+-K<! !!!!!!!!!!" lK!#!".+ %!+!"!#do"*Â+$ ""#ß��µ*SÀö2Î$ "##do6*Â+$ "+#¡do"*Â+!Hdo6*Â+/¡ do6*Â+!Hdo"*Â+! &!+!DRS)�iS%&'"#!'#0"'!##0 "!!+#0"*!'#0"1!##0"0!+#0"#!'#$ do­R>Â+-_N"#!'#�"*!'#!"'! ##�"1!##!"!!+#�"0!+#! k¢Ùlè*5öo"!!'#6!+cÕ¸º ßol!,-Ùl%&-./klK!#!".* +�! lK!#!".* '!+!klK!#!".)+�!$):4do­R@ Â+-K<($)!:!4!!$):4do­R -Â+-K<($)":"4"! _""!6#do­R@ Â+-_-RS' "&"("!6#!do­R-Â+-_-RS '""!&6&"#! lK!#!".) !#!#!@J"#$ fM%g00h& !!+!"!#3;-Î*'"!1'8&#)8#-",0"8! ""#3;-Î*'"!1'8&!"'8#-",#'8! "!+!klK!#!#.!! lK!#!#.! �9-R]&'*,(*,&*!&',&(! #!+!&'&',&*!('&*,")8! +,(',(&*',"!1'8&")8#-",008! &'&*,(*!+,((,(*&(! "% $$ -.(,(',(*'(! -.(,(',(