Final answer:
Points, lines, and planes can be represented in various ways in the real world. Symbolically, points are represented using uppercase letters, lines using lowercase letters or names of points on the line, and planes using uppercase letters or names of three non-collinear points on the plane.
Step-by-step explanation:
In the real world, points, lines, and planes can be represented in various ways. For example, points can be represented by physical objects like the tip of a pencil, the corner of a table, or the location of a building on a map. Lines can be represented by objects such as roadways, train tracks, or the edge of a table. Finally, planes can be represented by objects like a flat screen TV, the surface of a table, or the ground.
Symbolically, points are represented using uppercase letters, such as A, B, C. Lines can be represented using lowercase letters or by writing the names of two points that are on the line, such as l or AB. Planes are typically represented using uppercase letters or by naming three non-collinear points on the plane, such as P or ABC.