[Trang Ánh Nam] New comment on Ôn thi Tuyển Sinh 10 - Phần Hình Học.

Nam Trang Ánh has left a new comment on your post "Ôn thi Tuyển Sinh 10 - Phần Hình Học":

Câu 8: [Bến Tre 2015 – 2016]

Cho nửa đường tròn (O;R), đường kính AB. Trên nửa mặt phẳng bờ AB chứa nửa đường
tròn (O; R), vẽ các tiếp tuyến Ax, By với nửa đường tròn. Gọi M là điểm bất kì trên cung AB (M ≠ A; M ≠ B). Tiếp tuyến tại M với nửa đường tròn (O; R) cắt Ax, By lần lượt tại C và D.
a) Chứng minh tứ giác ACMO nội tiếp.
b) Chứng minh tam giác COD vuông.
c) Chứng minh: AC. BD = R2
d) Trong trường hợp AM = R. Tính diện tích hình viên phân giới hạn bởi dây MB và cung MB của nửa đường tròn (O; R) theo R.


Unsubscribe from comment emails for this blog.



Posted by Nam Trang Ánh to Trang Ánh Nam at December 25, 2018 at 3:02 AM

Comments

Post a Comment

Popular posts from this blog

[Trang Ánh Nam] New comment on Trump réagit aux commentaires vulgaires de Rashida....

Trang Anh Nam has left a new comment on your post " Trump réagit aux commentaires vulgaires de Rashida... ": I am not saying 2 wrongs make a right, but don't pretend like Trump has never said atrocious things. I hate selective outrage where you act highly offended when someone says something horrible about Trump but then defend the horrible things Trump has said about others by saying "Oh, that's just Trump." A foul comment should not be excused no matter who is saying such things. Here's just some examples Unsubscribe from comment emails for this blog. Posted by Trang Anh Nam to Trang Ánh Nam at January 4, 2019 at 9:09 PM
Read more

[Trang Ánh Nam] New comment on Sandman said: "As far as standing there, I had eve....

Stephen Miller has left a new comment on your post " Sandman said: "As far as standing there, I had eve... ": Steven Crowder is right from his monologue yesterday about this whole fiasco: when it comes to the press in this country, as conservatives we are at war and as far as I'm concerned we all need to stop being polite & take the gloves off from this point forward Unsubscribe from comment emails for this blog. Posted by Stephen Miller to Trang Ánh Nam at January 23, 2019 at 2:20 AM
Read more

[Trang Ánh Nam] New comment on the MAGA teen video easier for the press to manipu....

Stephen Miller has left a new comment on your post " the MAGA teen video easier for the press to manipu... ": I've never owned a MAGA hat. I'm going to get one this week. I'm going to wear it everywhere I go, including law school classes at fascist SMU. Can't wait! No one is going to tell me I can't wear what I want, when I want. God gave me the right to speak freely and express myself. No one is going to tell me that God didn't give me a right to self-protection, with or without 2A. I'm going to exercise my rights to the fullest extent possible. All.The.Time. Unsubscribe from comment emails for this blog. Posted by Stephen Miller to Trang Ánh Nam at January 22, 2019 at 8:47 PM
Read more