- |
= 1 .
(15 x 20 ) = 2 .
= 2 .
= 12 .
= 1 .
:
1 . .
( ) , . 200 ° 20 . , .
!!
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|
- = 4 -5 .
- =3 .
- =1/2
- =1/2
- = 1 ..
- = 2
:
, .
- 1/2 , - 1 , 5 .
, . .
175°, 40-50 . , .
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