380 , 60
: ● 200 ● 100 ● 1/2 ● ● 150 ● 2 ● 150 ● 200
:
1. 180°. , , .
2. . - , .
3. 2–3 30 . .
. , .
430 , 80 : ● 100 ● 150 ● 1 ● 70 ● 2 ● 250 ● 1/2 ● 100 ● 100
1. 30 . . , . , , .
2. . , . 40 180°.
. , 1 , ( )