user-avatar
daotranggv
2 năm trước
6.Cho hình thang ABCD có đáy AB=40cm, CD=80cm, cạnh BC=50cm, AD=30cm. Chứng minh rằng: tứ giác ABCD là hình thang vuông. ai chứng minh dùm mik nhé
Thích Trả lời Chia sẻ

Các câu hỏi liên quan

29. Lan ................ you some minutes ago. a. phones b. phoning c. phoned d. phone 30. Don’t ........... the door open when you go out. a. leave b. leaves c. leaving d. left 34. Lan, how are you doing this ............? a. school b. day c. class d. term 40.I can dance more ...................... than my friends. a. fluently b. attentively c. interestingly d. graceful 44. He is very good at ................ He can do sums more quickly than the other pupils in his class. a. literature b. maths c. geography d. English 47. He always helps his friends with .............. exercises. a. easy b. bad c. difficult d. short 48. Her parents are .............. because she often gets bad marks in the exams. a, happy b. disapponinted c. tired d. boring 49. I am interested in natural science subjects like mathematics, physics and ................. a. England b. literature c. chemistry d. language 50. In her free time, Jane often plays the .............. a. piano b. football c. game d. basket ball giải thik ra giúp em vs ạ!!!><

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