 
 


          ,     .        .   70   25    .        .   ,          .





 



 


Copyright  2019 

All rights reserved.



 ,2019



ISBN978-5-4496-4219-6

     Ridero







      ,     . ʠ,   ,      15,        .    ,       ,    ,       .  ,     ,     .







   , ,  .

  蠖     .

     ,    .    ,  .



       ( ),   .  1.






 1. , , 



       ,     .    90,   .    90,   .

     .     . ,        ,   .  2.






 2.   12.



  14       180.  12 2.  34.



   90,    .  3.






 3. 




 


      ,  .     ||,      .



  ,       ,    :   .        .    180.  4.






Figure 4. AB || CD  1= 2= 3= 4.  5= 6= 7=8



H    AB EF.

  G     CD EF.

 15   180.

 : 16; 25; 62; 37; 38; 74; 84.

     ,  ,    .  1   AHE EHA.

 5   EHB  BHE.  2   BHG  GHB.  6   AHG  GHA.  8    CGF  FGC  .



  ,  ,    .

 :         ,   ,   180,   ..5.






 5.   BGH + DHG = 180,  AB ||CD



 :        ,    .  6.






 6.   BGE = DHG,  AB ||CD



 :       ,  , ,     ..7






 7.   AGH = DHG,  AB ||CD



      90,    .

      ,    90.  _|_     .

AB CD.  8.






 8.  







蠖   ,    . , ,  3,  . ,  4,  . ,   ,  . ,   ,  .     ,     :  ,  ,    .  9.






Figure 9.  .








     .

   . ,     ,   . ,     ,   . ,    ,   .  10.






 10.   .



     180.  11.






11.




  .


   .

   ,     (https://www.litres.ru/dzheyms-uells/geometriya-dlya-roditeley/)  .

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