What type of perspective is used to create architectural and mechanical plans?

Architectural and mechanical plans typically use a combination of orthographic projection and isometric perspective. Orthographic projection presents multiple views of an object, such as top, front, and side views, without distortion, allowing precise measurements. Isometric perspective, on the other hand, provides a three-dimensional representation while maintaining the scale of the object, making it easier to visualize complex structures. These techniques ensure clarity and accuracy in the design and construction process.