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cuemnehihi
2 năm trước
Cho đường tròn (O) ngoại tiếp tam giác nhọn ABC. Vẽ đường cao AH ( H thuộc BC). Vẽ HE vuông góc với AB (E thuộc AB), HF vuông góc với AC (F thuộc AC). a) Chứng minh : Bốn điểm A, E, H, F cùng thuộc một đường tròn. b) Chứng minh rằng : góc ABC + góc HFE = 90 độ c) Gọi M là giao của BF và HE, N là giao của HF và CE. Chứng minh MN // BC . (Chỉ hỏi câu c)
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Read the passage and do the tasks below: Football is a popular game which keeps players healthy and disciplined. It develops their mind and team spirit and sense of tolerance among them. It is a game played for ninety minutes (in 2 halves of 45 minutes and 15 minutes break). This game has 2 teams of eleven players in each. Players have to kick a ball with their foot and take a goal by putting ball into the goalpost (cột gôn) of the opponent team. In order to oppose the goal made by players of opponent team, there is a goalkeeper on each side. No one player is allowed to touch the ball with hand except the goal-keeper. A team having more goals got declared as the winner and other as closer. The game is conducted (hướng dẫn) by a referee and 2 linesmen (trọng tài biên). All the players are warned to strictly follow the rules while playing this game. It has been an international game and played as World Cup tournament (vòng thi đấu) every four years in different countries worldwide. I. Read the passage and tick () True or False: (1.0pt) Questions True False 1. There are 2 teams in the football match. 2. World Cup tournament is held every four years. 3. It is an individual sport. 4. A football match lasts 60 minutes.

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