user-avatar
trampham6470
2 năm trước
Mọi người giúp em với ạ Cho tam giác ABC có AB = 3cm, AC = 5cm, BC = 7cm và tam giác DEF có DE = 6cm, EF = 14cm, DF = 10cm a) tam giác ABC và tam giác DEF có đồng dạng với nhau không? Vì sao? b) Tính tỉ số chu vi của 2 tam giác trên
Thích Trả lời Chia sẻ

Các câu hỏi liên quan

4, Rewrite the sentences using “despite/ in spite of”(Viết lại câu sử dụng “despite / in spite of”) 1. Although Nam got up early, he came late. 2. Although the traffic was bad, we came early. 3. Although Minh worked hard, he didn’t get good marks. 4. Although that woman is old, she works hard to earn money. 5. The film begins with a terrible disaster .It has a happy ending . 5. Choose the best answers: ( chọn câu trả lời đúng nhất ) 1, Mai used to ( do/ does / doing ) jigsaw puzzles in her spare time . 2, Traffic accidents can be prevented if people ( remember / obey / go after ) the rules . 3, (There / This / It ) is not very far from here to the harbour . 4, (How far/ How much/ How long) is it from Da Nang to NhaTrang ? 5. We found the plot of the film (bored / boring /interested ) . 6. We were ( satisfy / satisfying / satisfied ) with the latest film of that director . 7. Not many people went to see the film ; ( however / despite / but ) , it received good reviews from critics . 8. (Thrilling/ Science fiction/ Horror) is a film that is set in the future, often featuring science. 6. Rewrite the following sentences, beginnings as shown or do as directed in bracket: ( Viết lại câu theo yêu cầu) 1. The distance from NhaTrang to Da Lat is about 300 km -> It ………………………………………………………………………… 2. He stopped playing the guitar three years ago ( Rewrite the sentence , using “used to” ) -> …………………………………………………………………… 3. It is about three kms from my house to the town . ( Make a question for the underlined part ) -> ……………………………………………………………………………… 4. The ending of the film was so moved ( Correct the mistake ) -> ………………………………………………………………… 5. Road / rules / strictly / obey / traffic / should / users ( Reorder the given words to make a meaningful sentence )

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