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Угол ВАС треугольника АВС равен 120 градусов.На биссектрисе этого угла взята точкаD так,что AD=AB+AC.Найдите углы треугольника BDC
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Предмет:
Математика -
Автор:
elijahxo2a - 5 лет назад
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Ответы 2
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Алло помоги нам
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Автор:
abigailjones - 5 лет назад
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0
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Так помоуме, если не нравится не пиши
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Автор:
biggiehkh4 - 5 лет назад
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0
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2.Прочитайте текст. Отметьте “True” “False” “Not stated”
The Bermuda Triangle
On December 5th, 1945 five US Navy planes took off from Fort Lauderdale In Florida. There were 14 pilots on board. Some time after the take off the control tower got a message from one of the planes. “There’s something wrong. The magnetic compass is going crazy. We don’t know where we are.” Soon the five planes disappeared. Boats and planes went immediately to look for the lost planes but they were not successful. There were neither crashed planes nor dead bodies. The accident happened in the area called Bermuda Triangle. It/s a large part of the Atlantic Ocean between Bermuda, Southern Florida Puerto Rico. Many ships, planes and about 1,000 people have disappeared in this area. One of the explanations is that underwater earthquakes cause huge waves called tsunami. They also produce very strong winds. Both can destroy ships and planes. Another theory says that there is a strange magnetic force in this area. It can really break a ship into pieces. Scientists also speak about the methane gas on the sea floor of the Bermuda Triangle. When it comes out and mixes with the air, it’s so powerful that it can stop the ship/s or the plane’s engine. It can also start a fire. Than the explosion destroys the ship or the plane completely. Some people believe that aliens carry away people together with the machines. Whatever the truth is there is no clear answer.
15.The control tower got a message from one of the ships that the magnetic compass was going crazy.
True b) False c) Not stated
16. There weren’t any pieces of planes or dead bodies in the water.
True b) False c) Not stated
17.Tsunami can cause the destruction of ships and planes.
True b) False c) Not stated
18. There is the methane gas on the sea floor of the Bermuda Triangle.
True b) False c) Not stated
19. Aliens carry away people together with the machines to examine them carefully.
True b) False c) Not stated
20.There is clear answer about The Bermuda Triangle
True b) False c) not stated
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