Cho tam giác ABC cân tại A. lấy điểm D thuộc canh ac, điểm E thuộc cạnh AB sao cho AD=AE. So sánh a) ABD;ACE b) Gọi I là giao điểm của BD và CE. Tam giác IBC là tam giác gì? Vì sao? vẽ hình giùm mình nha

Các câu hỏi liên quan

V. Đặt câu hỏi: 1/............................................................. - She jogs 5 kilometers a day. 2/.................................................................................... - It's about 200 meters from my school to the post office. 3/............................................................. - The dictionary is 200,000 dong. 4/............................................................. - I'd like some local stamps and a phone card. 5/............................................................. - Tim is my pen pal in England. 6/............................................................. - I need a phone card to phone my parents. 7/............................................................. - Mr. Viet is a farmer. 8/............................................................. - Lan often goes to the library in her free time. 9/............................................................. - My mother is cooking in the kitchen at the moment. 10/............................................................ - Nam likes playing soccer after school. 11/............................................................ - I go to the movies twice a month. 12/............................................................ - Hoa will be twelve on her next birthday. 13/............................................................ - Nam's favorite subject is Electronics. 14/............................................................ - The shoes cost 50,000 dong.