Answer :
Final answer:
An isometric drawing is constructed by first drawing normal surfaces as orthographic lines, hence the correct answer is c) Orthographic.
Explanation:
These lines serve as the basis for accurately representing the object's features and proportions in three-dimensional space. By aligning the orthographic lines with the axes of the drawing, the isometric view maintains equal angles between each axis, resulting in a balanced and realistic portrayal of the object. This method facilitates clear visualization and communication of complex structures or designs, making it a valuable tool in engineering, architecture, and technical illustration. Through precise execution of orthographic lines, isometric drawings provide a detailed and accurate representation of objects from various perspectives.
