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Sửa đề: tia phân giác góc B cắt AE tại H
Xét ΔBFH vuông tại F và ΔBEH vuông tại E có
BH chung
góc EBH=góc FBH
=>ΔBFH=ΔBEH
=>HF=HE
mà HE<HC
nên HF<HC
I. Nội qui tham gia "Giúp tôi giải toán"
1. Không đưa câu hỏi linh tinh lên diễn đàn, chỉ đưa các bài mà mình không giải được hoặc các câu hỏi hay lên diễn đàn;
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3. Không "Đúng" vào các câu trả lời linh tinh nhằm gian lận điểm hỏi đáp.
Các bạn vi phạm 3 điều trên sẽ bị giáo viên của Online Math trừ hết điểm hỏi đáp, có thể bị khóa tài khoản hoặc bị cấm vĩnh viễn không đăng nhập vào trang web.
đã đọc cái này
I. Nội qui tham gia "Giúp tôi giải toán"
1. Không đưa câu hỏi linh tinh lên diễn đàn, chỉ đưa các bài mà mình không giải được hoặc các câu hỏi hay lên diễn đàn;
2. Không trả lời linh tinh, không phù hợp với nội dung câu hỏi trên diễn đàn.
3. Không "Đúng" vào các câu trả lời linh tinh nhằm gian lận điểm hỏi đáp.
Các bạn vi phạm 3 điều trên sẽ bị giáo viên của Online Math trừ hết điểm hỏi đáp, có thể bị khóa tài khoản hoặc bị cấm vĩnh viễn không đăng nhập vào trang web.
Tốn trang giấy của OLINE MATH . Dễ nhưng mà lớp 1 chưa học cái đấy ngoại trừ nó lấy máy tính hoặc nhờ người khác tính hộ .
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một vé báo cáo nha
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Mèo méo meo mèo meo
khong
j
1 vé báo cáo ok không ?
ko nhắn linh tinh nhoa em ☘
Xin chúc mừng bạn đã 1 vé báo cáo
wth cho bn vé báo cáo
gì vậy má, nhắn tào lao ko à
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cái gì vậy ????????????
tôi vừa gặp một thằng thần kinh giờ lại tới thằng này
Cho 1 vé báo cáo
cậu ghi cái j thế
1 VÉ BÁO CÁO
cái j dậy
linh tinh thế
linh tinh nữa vừa thôi
OK
?
trang lả đồ ngu si ngu ngốc
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Một vé báo cáo nhà bn
BÁO CÁO
cho bay nick nhé