user-avatar
pvandung662002
2 năm trước
Cho SABCD có đáy là hình thang vuông tại A và D, SA vuông với mặt đáy.Biết AD=CD=1/2AB. Chứng minh rằng: (SBC) là tam giác vuông Giúpp mình vsss thankss
Thích Trả lời Chia sẻ

Các câu hỏi liên quan

Điền mệnh đề quan hệ thích hợp vào chỗ trống: 1.It is the English language ______ is used as an official language in 44 countries. 2.Our manager gave a party _____ cost 80 million. 3.We don’t know all the guests ______ were invited to the party. 4.The man ______ was introduced as the most successful businessman was very young. 5.The party _______ lasted only two hours gave us much pleasure. 6.Do you know the name of the lecture ______ just came to our class? 7.She knows the stranger _______ invited our company yesterday. 8.This is the car ______ they wanted to buy. 9.The man _______ is standing by the window is my grandfather. 10.The man _______ you met at the party was a famous film star. 11.What is the name of the lady ______ was wearing the gold dress? 12.You are reading the book _____ I want to read. 13.Do you like the people _____ she invited to her party? 14.Do you know the man _____ lives opposite my house? 15.The magazine ______ you lent me yesterday is very interesting. 16.I gave him all the stamps _______ I have. 17.I bought this map, ______ helped me a lot. 18.He said that he had never seen her before, ______ was not true. Mn giúp mình với ạ :33

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