Ответ:
1) 180°-60°-70°=50°
2)180°-80°-80°=20°
3)а=15°+55°=70°
4) 180°- 90°- 44°=46°
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Ответ:
1) 180°-60°-70°=50°
2)180°-80°-80°=20°
3)а=15°+55°=70°
4) 180°- 90°- 44°=46°