Why a shoebox can never form a circular shadow?

Shape of the Object: A shoebox is a rectangular object, and shadows formed by such objects are influenced by their shape. The edges of the shoebox create straight lines that define the shadow.

Shadow Formation: Shadows are formed by blocking light. The shape of the shadow depends on the shape of the object casting it. Since the shoebox has straight edges and flat surfaces, the shadow will have similar straight edges and won't be circular.

Light Source Position: Even if the light source is positioned in various ways, the shadow of a rectangular object like a shoebox will still retain its rectangular or trapezoidal shape depending on the angle of light, not circular.

Because a shoebox is a rectangular object with flat surfaces, it will cast a shadow that reflects its shape, resulting in a shadow with straight edges rather than a circular one.