Final answer:
Vertical and horizontal orientations in the environment are examples of perceptual illusions, where our brains perceive horizontal lines as calming and vertical lines as stable visuals.
Step-by-step explanation:
The statement that there are more vertical and horizontal orientations in the environment than oblique (angled) orientations is an example of perceptual illusions. Our brains are wired to perceive horizontal lines as being visually calming, like the surface of water, and vertical lines as stable visuals, such as tree trunks or the columns on a classical building. Diagonal lines, on the other hand, are associated with movement and activity. This perception of different orientations is influenced by the way our brains interpret and process visual information.