π-Shaped Person
Someone with skills in “left brain” (math, data, analytics) and “right brain” (creative, intuitive, subconscious) disciplines—the horizontal line on the top stands for breadth of knowledge across domains, while the vertical lines represent two areas of depth knowledge.
Most math teachers are I-shaped; some are T-shaped (a generalist to a shallow level with a depth of skill in one field), and very few are π-shaped persons.