Insideness
"Insideness" in a Sentence (2 examples)
Children as young as four are known to have relational concepts such as insideness, sameness, and so on (eg, Smith, 1989).
If we can establish a point that is guaranteed to be outside of our polygon, we can test the insideness of any point by connecting this test point to our outside point by a straight line and counting the number of times the line crosses the polygon.