Two examples of perspective drawings from the Tues./ Thurs. class. Donna Holbrook's drawing (Art 7A) shows the interior view of a room in two-point linear perspective. The assignment was to create a room with sculptural forms inside. Notice that she has also placed a one-point perspective box in the room on the left. This is the viewer's location in the image.
Mike Geare's drawing (Art 7B) is a beautifully illustrated rendering of a flight of stairs. To achieve this Mike used two horizon lines. First the standard horizontal horizon line locating "eye level" and the set of vanishing points. Secondly, to find the incline of the stairs and banister, he used a vertical horizon line.