Cách c/m tia p/g là gì?
Cần gấp,giúp mìn nhanh nhé!!!!!!!
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bạn ơi đầu bài có nhầm lẫn j ko làm sao bình phương của OD có thể bằng tích của DI với DM được
Câu b sai sai. Mình làm câu a trước
a) Ta có: góc zOy = góc zOx - góc yOx = 70 - 35 = 35 độ
=> góc zOy = góc yOx = góc zOx : 2
Mà tia Oy nằm giữa 2 tia Ox,Oz (Vẽ hình ra thấy liền!)
=> Oy là phân giác góc xOz
1 She said that she was coming
2 She said that she wouldn't see me the following day
3 She said that he worked in a bank
4 She said that he was living in Paris for a few months
5 Lan said that she would be very busy the next day
6 Thu said that all the students would have a meeting the following sunday
7 Tam said that she could swim acroos that river
8 His sister said that she didn't buy that book
9 The boy said that they had to try their best to win the match
10 Her father said to her that she could go to the movies with her friends
11 Her classmate said that Lan was the most intellligent girl in their class
12 The teacher said that the sun rised in the east
Chứng minh 2 tam giác chứa hai góc của tia phân giác đó bằng nhau, sau đó suy ra hai góc tương ứng. Suy ra tia phân giác
Thanks bn nhìu!!!