No, a square cannot rotate onto itself at 90 degrees. When a square is rotated by 90 degrees, its orientation changes, and it does not match its original position. However, it can be rotated by 90 degrees and still appear the same due to its symmetrical properties, but it is not the same configuration as its starting point.
I dOnt now
Yes
A square.
A trapezoid
square. rotate a square and it's still looks the same rotate a trap and you can tell it's on its side
I dOnt now
Yes
A square.
It is 180 degrees.
A trapezoid
Rotate 360 degrees
60 degrees
square. rotate a square and it's still looks the same rotate a trap and you can tell it's on its side
With 4 equally spaced blades on a fan, you can rotate the fan onto itself with a minimum of 90 degrees. Each blade will align with the next blade at a quarter turn, which corresponds to 90 degrees.
90 degrees
90 degrees
90 degrees