【单选题】The sides of a square are 3 cm long. One vertex of the square is at (2,0) on a square coordinate grid marked in centimeter units. Which of the following points could also be a vertex of the square?
【简答题】阅读理解。 Square Dance ABC HOME PAGE Square Dance ABC is an exciting new way to practice square dancing. Enjoy a funny, easy beginner's square dance, with no experience needed. There are three different d...