user-avatar
ngovietthang
2 năm trước
Cho hthang ABCD có 2 đáy AB,CD mà AB < CD . Đthẳng đi qua A và // vs BC căt BD tại E . Đthẳng đi qua B và // vs AD cắt AC tại F . Chứng minh EF//CD
Thích Trả lời Chia sẻ

Các câu hỏi liên quan

Choose the best option to complete each sentence. Circle A, B, C or D. 1. ___________spectator sports in Britain are cricket and football. A. More popular B. The more popular C. Most popular D. The most popular 2. Mai:____________ a nice T-shirt, Trang!-Trang: Thank you. A. How B. What C. Which D. It 3. We ____________ have flying cars in 2050, so there will probably be fewer cars on the roads. A. can B. should C. might D. must 4. The statue of Liberty is one of the most famous_______________ in the United States. A. towers B. landmarks C. capitals D. Cities 5. ___________ up the tree! You’ll fall down. A. Climb B. Climbing C. Not to climb D. Don’t climb 6. A: I’ve just received a scholarship. - B: _______________! A. Really B. Thank you C. Congratulations D. Well 7. Kien is not very ___________. He never plays games. A. sport B. sports C. sporting D.sporty 8. It’s very ___________ to swim there. The water is heavily polluted. A. safe B. safely C. unsafe D. unsafely 9. As it doesn’t snow in Viet Nam, we cannot ___________ skiing. A. play B. go C. do D. ride 10. Will robots look _____________ the elderly and children? A. for B. at C. into D. after 11. There is a beautiful picture ______________ the wall of my room. A. in B. on C. from D. at 12. Manchester is famous ______________ its football teams. A. in B. with C. for môn tiếng anh

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