Which type of drawings typically features three principal axes at 120° apart?

The type of drawings that typically features three principal axes at 120° apart is isometric drawings. In isometric projection, the three axes of space are displayed equally, allowing for dimensions and angles to be represented accurately without distortion. This technique provides a three-dimensional representation on a two-dimensional plane, making it easier to visualize the object in space.

Isometric drawings are particularly useful in technical fields, such as engineering and architecture, as they allow a clear understanding of design and measurements. Each of the three axes – usually referred to as the X, Y, and Z axes – represents one dimension of the object, and in isometric view, they remain at 120° relative to one another. This unique arrangement effectively captures the object's height, width, and depth simultaneously, which is not typically achieved in other types of drawing methods.

The other types of drawings, like orthographic, pictorial, and perspective, do not utilize the same axes configuration. In orthographic drawings, multiple views are presented without the three-dimensional effect characterized by isometric drawings. Pictorial drawings provide a more generalized representation but do not strictly adhere to the 120° alignment, while perspective drawings focus on creating a sense of depth and distance through vanishing points rather than