user-avatar
vanhieu890
2 năm trước
Cho tam giác ABC , M là trung điểm của BC . Trên tia đối của tia MA lấy điểm E sao cho MA = ME . Chứng minh rằng a) AB = CE b) AB song song CE c) từ C kẻ tia Cx song song AB . Vẽ đường thẳng đi qua B và trong điểm E của cạnh AC cắt Cx tại D .chứng minh BI = BI
Thích Trả lời Chia sẻ

Các câu hỏi liên quan

I have worked for this company ………2019 A: in B: on C: since D: for 2. She has taught English……. 2 years A: in B: on C: since D: for 3. He hasn’t ………..her since she was a little girl A. meet B: met C: meeted D: meets 4. I have …….English since I was a child. A. study B: studies C: studyed D: studied 5. They …….cancelled the meeting. A: do B: are C: were D: have 6. Water ……….at 100 degrees. A: boil B: Boils C: Boiled D: is boiled 7. The sun ………..in the east. A: rise B: rises C: rised D: is rised 8. I like ……….. ice cream so much A.: eating B: eat C: ate D: eating 9. How many…….. are there A: people B: water C: rice D: money 10. The meeting starts ……… 9 am A: on B: in C: at D: of 1.He (have)……… not learned today. 2.They (buy)…………..a new book. 3.They (not/ plan)…………..their holiday yet. 4.Where (be/ you)?……….. 5.I (write)…………..four letters. 6.he (not/ see)…………..her for a long time. 7.(be/ you)…………..at school? 8.School (not/ start)…………..yet. 9.(speak/ he)…………..to his boss? 10.No, she (have/ not)…………..the time yet. 3. My cousin, Ron (have)………..a dog. It (be)………..an intelligent and beautiful pet with a short tail and big brown eyes. Its name (be)………..Rex and it (like)………..eating meat. Although Rex (bark)………..when strange guests visit, it (never/ bite)………..anyone; To be honest, Rex (be)………..very friendly. It (not/ like)………..eating fruits, such as apple, orange, banana, or grape, but it (often/ play)………..with them. If the weather (become)………..bad, Rex (just/ sleep)………..in his cage all day. Ron (play)………..with his dog every day after school. Because there (be)………..many people on the road, Ron (not/ let)………..the dog run into the road. Ron (often/ take)………..Rex to a large field in the park to enjoy the peace there. Rex (sometimes/ be)………..naughty, but Ron loves it very much. 4. They/ not / play games at the weekends =>________ we / not / believe our teachers =>________ Peter / understand the question? =>________ We/ not / work late on Saturdays =>________ John/ want some drinks? =>________ He/ have three sons=>________ when / David / go to his Chinese class? =>________ why / you / have to clean up? =>_______

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