How many views are needed to accurately determine the shape of an object?

To accurately determine the shape of an object, three views are typically necessary: the front view, the top view, and the side view. This is because each view presents a different perspective of the object, allowing for a comprehensive understanding of its dimensions and contours.

The front view primarily provides details about the height and width, the top view gives insight into the width and depth, and the side view reveals depth and height. By integrating these three perspectives, one can effectively visualize the three-dimensional structure of the object.

In engineering and drafting contexts, this is a fundamental principle often referred to as "orthographic projection." It ensures that all critical dimensions and features of the object are represented clearly, facilitating accurate interpretation and communication of the object's design.