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) D .

1

. .

2.

2

, . .

3

, , , . .

.

4

1. ? .

, .

5

1. , , ? .

.

6

1. . ?

, .

1

. .

2.

2

, . .

3

, , , . .

.

4

1. ? .

, .

1

DABC B, B = , D = DC.

) , D .

) D , ∠D = 90, D = 8 .

2

, β, , 60.

) , .

) , ∠ = 60, = 8 .

3

D , . , D = 10 , = 8 , ∠ = 45.

) , D.

) D.

4

D , . - , D.

) , D.

) D, ∠D = 30, = 20 , = 8 .

5

D . , = = 2 , = 6 , D = 12 D , D 60.

) , .

) D .

6

DABC B, B = , D = DC.



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