user-avatar
vypham294
2 năm trước
Cho tam giác abc vuông tại a đường cao ah A)cm:tam giác abc đồng dạng vs tam giác hba B)bt ah=9cm ac=12cm tính độ dài bc,ah và bh C)qua điểm h kẻ he vuông góc ab,(e thuộc ab) và hf vuông góc vs ac,(f thuộc ac) Cm:ah²=ae×ab D)cm:ae×ab=af×ac
Thích Trả lời Chia sẻ

Các câu hỏi liên quan

X. Read the email then answer the questions. From: Brett.walker149@gmail.com To: Subject: Re: sports Dear Brett Thanks for your email. You do lots of sports at school in Canada. I’d love to play ice hockey one day. We do lots of sports at our school too. We’ve got a swimming pool at school and our class go swimming every Wednesday. We also play tennis, volleyball and football, but football in Australia is different to soccer. You can touch the ball with your hands! There are lots of after-school sports clubs in Australia too. I go to a surfing club after school on Tuesdays and Thursdays. We go to the beach and learn how to surf. It’s great fun! Can you surf in your country? Write soon Rob BÁM SÁT THEO CÂU HỎI ( NHỮNG CHỖ CÔ IN ĐẬM MÀU ĐEN) ĐỀ VIẾT CÂU TRẢ LỜI. GHI CẢ CÂU ( BAO GỒM CHỮ HE CHO SẴN) 23. Where does Rob live? He ________________________________________________ 24. How often does Rob go swimming? He ________________________________________________ 25. Is football in Australia the same as soccer? ( Sau dấu phẩu có dấu cách) Yes, ____hoặc No, ____ __________________________________________________ 26. On what days of the week does Rob go to a surfing club? He _______________________________________________ 27. Where does Rob go to learn how to surf? He ________________________________________________ 28. Does Rob like surfing? ( Sau dấu phẩu có dấu cách) Yes, ____ hoặc No, _____ __________________________________________________ XI. Use the prompts to write sentences. VIẾT CẢ CÂU 29. We/ go/ skiing yesterday. 30. you/ watch/ the men’s basketball final/ TV/ last night? 31. I/ not play/ badminton/ last Sunday/ because/ I/ be/ ill. 32. Sue and her friends/ do/ yoga/ the gym/ now. 33. Last week/ we/ study/ how/ surf. It/ be/ very interesting. 34. He/ usually/ play/ football/ his friends/ Saturdays. 35. Where/ the children/ be/ yesterday morning? They/ be/ at the swimming pool. 36. His father/ teach/ him/ how/ play/ football/ a very young age.

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