21. Some are undulating curves, inside and out; others are strictly rectilinear . 22. These create rectilinear patterns of shadow, an awkward background for displaying paintings. 23. Another special type of subdivision is called rectilinear ( or orthogonal ) subdivision. 24. They made a rectilinear gamma scanner and a gamma camera in the 70s. 25. The rectilinear churchyard contains memorials going back as far as the 17th century. 26. Big squares and wide rectilinear avenues were the signatures of the new Lisbon. 27. The simple rectilinear building contains an atrium topped by an asymmetrical glass dome. 28. By the early 1970s, Uno Prii began to use more rectilinear forms. 29. The room is rectilinear in shape and measures approximately 31 by 44 feet. 30. This style he named the " Rectilinear Period ".