15 college entrance examination math problem I want to know why I can't draw the square to the right?
To be exact, you should ask why you can't draw the left, right?
Plane α is a square with side length EF, so the side length of the square is 10. If you draw to the left, the longest side length of a square is AE=√A? e？ +A？ Answer? = √ 80 < 10, can't form a square, so you can only draw the right side.