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Cho tam giác ABC cân tại A trên cạnh AB lấy điểm D, trên cạnh AC lấy điểm E sao cho AD = AE. Gọi M là giao điểm của BE và CD Chứng minh rằng a) BE = CD b)BMD=CME c) AM là tia phân giác của góc BAC
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II. Read the following text and do the tasks below. Water rugby became the most popular of water sports, but somehow the water polo name became a popular name for it. As played in England, the object of the game was for player to touch the ball, with both hands, at the goal of the pool. The goaltender stood on the poll deck, ready to dive on any opponent who was about to score. Water polo quickly became a very rough sport, filled with underwater fights away from the ball, and it wasn’t unusual for players to pass out for the lack of air. In 1877, the sport was tamed in Scotland by the addition of goalposts. The Scots also replaced the original small, hard rubber ball with a soccer ball and adopted rules that prohibited taking the ball under the surface or, tackling a player unless he had the ball. A. Answer the questions: 1. What is the different name of water rugby? ________________________________________________________________ 2. What was the purpose of the game in England? ________________________________________________________________ 3. What did the goaltender do when an opponent was about to score? ________________________________________________________________ 4. When was the sport tamed by the addition of goalposts? ________________________________________________________________ 5. What kind of ball did the Scots replaced the original small, hard rubber ball with? ________________________________________________________________ 6. When was Water polo added to the Olympic program? ________________________________________________________________

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