Прочитай и выполни задание

Если из вершины угла провести луч, то он разделит угол на два угла, сумма которых будет равна величине заданного угла.

\(\angle {ACB}= \angle{ACD}+ \angle{DCB}\) .

Найди величину угла:

1. \( \angle{ACD}=15 \degree, \angle{DCB} = 49 \degree\) ;

   \(\angle {ACB}= \) [ ] \(\degree\) .

2. \( \angle{ACD}=68 \degree\) , \(\angle{DCB} = 12 \degree\) ;

   \(\angle {ACB}= \) [ ] \(\degree\) .

3. \( \angle{ACD}=3 \degree\) , \(\angle{DCB} = 59 \degree\) ;

   \(\angle {ACB}= \) [ ] \(\degree\) .

4. \( \angle {ACB}=89 \degree\) , \(\angle{DCB} = 49 \degree\) ;

   \(\angle{ACD} = \) [ ] \(\degree\) .

5. \( \angle {ACB}=78 \degree\) , \(\angle{DCB} = 39 \degree\) ;

   \(\angle{ACD} = \) [ ] \(\degree\) ;

6. \( \angle {ACB}=65 \degree\) , \(\angle{DCB} = 27 \degree\) ;

   \(\angle{ACD} = \) [ ] \(\degree\) .