The three figures that can be precisely defined using only undefined terms are:
- Angle - Defined as the figure formed by two rays with a common endpoint.
- Circle - Defined as the set of all points in a plane that are a fixed distance (the radius) from a given point (the center).
- Line segment - Defined as a part of a line that is bounded by two distinct endpoints.
Undefined terms in geometry typically include points, lines, and planes, which can be used to define these figures.