Name the three undefined terms in geometry

The three undefined terms in geometry are: 1. **Point** - A point represents a location in space and has no size, dimension, or shape. It is often represented by a dot and labeled with a capital letter. 2. **Line** - A line is a straight one-dimensional figure that extends infinitely in both directions. It has no thickness and is defined by at least two points. 3. **Plane** - A plane is a flat, two-dimensional surface that extends infinitely in all directions. It has length and width but no thickness, and it is typically represented by a parallelogram shape. These terms are considered "undefined" because they are the foundational concepts upon which other geometric concepts are built, and they do not have formal definitions in terms of other geometric concepts.