Which artistic concept often employs straight lines and precise angles?

The concept that often employs straight lines and precise angles is linear perspective. This technique, developed during the Renaissance, revolutionized the way artists represented three-dimensional space on a two-dimensional surface. Linear perspective relies on a systematic approach to depicting depth, where parallel lines converge at a single point on the horizon known as the vanishing point. This method gives a realistic portrayal of spatial relationships, creating an illusion of depth that draws the viewer into the artwork.

In contrast, Impressionism focuses on capturing the momentary effects of light and color rather than strict lines or precise angles, often employing softer, more fluid brushstrokes. Naturalism aims to represent subjects as they appear in nature, emphasizing realistic portrayal without the mathematical precision of linear perspective. Abstract expressionism, on the other hand, emphasizes spontaneous and emotional expression over structured forms, often resulting in more chaotic and less defined compositions. This highlights the distinct nature of linear perspective as a technique centered around geometric accuracy.