If you rotate a square 90 degrees, the resulting shape is:

Rotating a square 90 degrees produces the SAME SQUARE, just oriented differently — its size and shape are unchanged. ASVAB Assembling Objects tests understanding that ROTATION doesn't change a shape's identity or size, only its orientation. A square looks the same after a 90° turn (due to its symmetry); other shapes look turned but remain the same shape and size. This principle underlies the section: shapes in answer choices may be rotated to various angles but must remain the same shapes. Recognizing a shape regardless of rotation — while it stays the same size and form — is fundamental.