user-avatar
Tranlamkh
2 năm trước
Cho hình bình hành ABCD.Trên cạnh AB lấy điểm E , trên cạnh CD lấy điểm F sao cho EF//AD . a) CM rằng AE//DF , BE//CF b) CM rằng tứ giác AEFD là hình bình hành c) CM rằng tứ giác BEFC là hình bình hành d) AF cắt DE tại M, BF cắt CE tại N. Chứng minh MN=1/2 AB (câu d là câu quan trọng nên lm hộ e vs , ko cần lm a,b,c cx dc nhg lm nhanh giúp e) please 🥺🥺
Thích Trả lời Chia sẻ

Các câu hỏi liên quan

2 phút My favourite hobby is reading. I enjoy (21)______a book when I am free. I started (22) ______it when I was four years old. The first time I read books. I felt (23) ______. So I kept (24) ______. The teachers always taught me 3 to read the difficult words. I was happy when I read a story with a happy ending. I was thrilled (25) ______I read a detective story. I enjoy reading because I like to explore the imaginative world of my (26) ______author, J.K.Rowling who writed ëHarry Potteríí. There are a lot of advantages (27) ______reading. Reading can make me relaxed (28) ______calm. I can also learn new vocabulary items. Then I (29) ______further improve my English. Moreover, it can give me (30) ______unlimited imagination, so I can write books in (31) ______future. I can learn the different cultures and customs of other countries (32) ______the world too.I read at (33) ______one hour every day. I read books by myself. I usually read it at home. I (34) ______I could read different kinds of books (35) ______it might be very challenging. (http://www.ycps.edu.hk.My%20Favourite%20Hobby2.pdl) 21.A. read B. reading C. to reading D. being read 22.A. will do B. to doing C. do D. to do 23.A. interesting. B. interested C. interest D. to interested 24.A. reading B. to read C. to reading. D.read 25.A. what B. where C. when D. that 26.A. favourite B. lovely C. love D. favor 27.A. at B. to C. on D. of 28.A. but B. so C. and D. to 29.A. can B. do C. did D. have 30.A. every B. a C. an D. one. 31.A. the B. a C. an D. one 32.A. on B. all C. from D. in 33.A. most B. more C. less D. least 34. A. detest B. wish C. want D. like 35. A. why B. but C. because D. what

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