题目内容
如图(1)∠AOB = ∠AOC + ( )+( );
(2) ∠AOB = ∠AOC +( );
(3) ∠COD = ∠AOD -( ) = ∠BOC - ( );
(4)∠BOC = ( )- ∠AOC
(2) ∠AOB = ∠AOC +( );
(3) ∠COD = ∠AOD -( ) = ∠BOC - ( );
(4)∠BOC = ( )- ∠AOC
(1) ∠COD, ∠BOD ;
(2) ∠BOC ;
(3) ∠AOC, ∠BOD ;
(4) ∠AOB
(2) ∠BOC ;
(3) ∠AOC, ∠BOD ;
(4) ∠AOB
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