user-avatar
boloco2342000
2 năm trước
Cho tam giác ABC cân tại A. Kė BE vuông góc AC (E thuộc AC), CD vuông góc AB (D thuộc AB). Gọi I là giao điểm của BE và CD. (Góc A < 90 độ) a) Chứng minh: Tam giác ADC = tam giác AEB b) Chứng minh: AI là tia phân giác của góc BAC. c) Chứng minh: BI> IE. d) Trên tia đối của tia BA lấy điểm F sao cho BF = BD, EF cắt BC tại K. Chứng minh K là trung điểm của EF. * lm giúp mk vs hứa vote 5 sao nhé mk gấp quá bn lm dcj thì lm hộ mk v
Thích Trả lời Chia sẻ

Các câu hỏi liên quan

1 I would't accept if you asked me to go out with you -If you were ...... 2 I will call the police if you don't leave me lone - Unless 3 In the windy weather , we won't go out - If 4 Give it back to me , and i will you some money - If 5 If you had't told me about her problem , i would't have lent her some money - Unless 6 If you return to Hometown for Tet holiday , please send the present to my grandmother - Should 7 You did't come home early so the house was broken into and things were stolen - Had 8 If it were not your smoking too much , you would't cough a lot - But for 9 I am sorry i didn't see my uncle yesterday -i wish 10 I told lie so i was punished - Had 11 If you don't hurry up , you will be late - Hurry up 12 Because you were not careful , you cut yourself with that knife - Had 13 Susan is overweight because she eats too much chocolate - Were 14 If you don't study harder , you will fail the next exam - Study 15 If Jack hadn't helped me , i would't have been able to move the table - Without

2018 © Loga - Không Ngừng Sáng Tạo - Bùng Cháy Đam Mê
Loga Team