Conclusion Questions: 1. What is the purpose of construction and object lines? Construction lines are used to compare the edges of different views and object lines are used to show the outline of a object 2. What is the purpose of hidden lines and center lines? Hidden lines are used to show areas that can't be seen in a regular sketch and center lines are used to show the center of a object. 3. What type of pictorial is shown in the 1st representation in item 2? Oblique because you see mostly the front of the object. 4. What type of pictorial is shown in item 6? Oblique because you see mostly the front of the object. 5. Why would building professionals prefer multi-view drawings over pictorial drawings? So, they are able to see the details of a object from multiple perspectives.