user-avatar
thanhchy02
2 năm trước
cho ΔABC cân tại A ( ∠A<90 độ). kẻ BI ⊥AC(I∈ AC),CK ⊥AB(K ∈ AB) a,chứng minh b,chứng minh : Δ AKI cân tại A c,cho BI=5cm,AC=8cm,AI=6cm.tính chu vi Δ BKC(Làm tròn đến chữ số thập phân thứ nhất)
Thích Trả lời Chia sẻ

Các câu hỏi liên quan

D. READING I. Read the following text carefully and choose the correct answer A, B, C or D for each of the gap. (1 point) Ewan McGregor was (17)_____ in Scotland in 1971. He decided to be an (18)______ when he was only nine and he (19)_____his first film in 1992. So far in his career he has appeared in a lot of different types of films, including comedies, musical, dramas and the Star Wars movies. In his career Ewan has worked with (20)_____ like Cameron Diaz and Nicole Kidman, and his films have won lots of awards. He loves acting and when he finished filming the musical, Moulin Rouge, he said, “I have never been happier to do anything in my life”. 17. A. bear B. born C. bearing D. beared 18. A. acting B. actress C. actor D. action 19. A. made B. played C. worked D. starred 20. A. directors B. actors C. actresses D. writers II. Read the text again and answer the questions (1 point)

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