Undefined term — Geometry, what it means and where it is taught
Point, line and plane. Described but never defined, because any definition would use them.
Taught in Geometry.
Where it is taught
Practise this idea
1 question in the course bank use Undefined term, in Definitions, Postulates & Reasoning.
Problem 1
Which of these is an undefined term in geometry?
- Point
- Segment
- Angle
- Midpoint
Worked answer
Point
Point, line and plane are undefined.
Segment, angle and midpoint are all defined using them.