[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 10: [Bình Định 2015 - 2016]

Cho tam giác ABC (AB <AC) có 3 góc nhọn nội tiếp trong đường tròn (O; R). Vẽ đường cao AH của tam giác ABC, đường kính AD của đường tròn. Gọi E, F lần lượt là chân đường vuông góc kẻ từ C và B xuông đường thẳng AD. M là trung điểm của BC.
a) Chứng minh các tứ giác ABHF và BMFO nội tiếp.
b) Chứng minh HE // BD.
c) Chứng minh: S=AB.AC.BC/4R ( S là diện tích tam giác ABC)


Unsubscribe from comment emails for this blog.



Posted by Nam Trang Ánh to Trang Ánh Nam at December 25, 2018 at 3:06 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 "We're Desperate To Get Trump Out Of Office" - Joy....

Stephen Miller has left a new comment on your post " "We're Desperate To Get Trump Out Of Office" - Joy... ": What an INSANE response from Joy Behar, a virtual font of insanity. But that's a liberal any more. It's Trump's fault. They just publicly slandered a bunch of SCHOOLCHILDREN and set off a wave of doxing, attempting to ruin the lives of them and their ENTIRE FAMILIES with FAKE NEW... And it's Trump's fault. I'd ask how this woman can sleep at night, but since she has no self awareness nor any sense of shame, she probably sleeps like a baby. Maybe a drunk one. You Leftists must be so proud. Look what you've done... Unsubscribe from comment emails for this blog. Posted by Stephen Miller to Trang Ánh Nam at January 23, 2019 at 1:26 AM
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