Which are undefined terms that can be used to define other terms?

a) point, segment, ray
b) point, line, plane
c) line, plane, cube
d) line, ray, angle

Answer with explanation:

The meaning of undefined terms is that , axioms or postulates in mathematics which are universal truth.These terms are undefined.

⇒Option A

Point, Segment, Ray

 To define a segment you must know about point and line.

Incorrect Option

⇒Option B

Point, line, Plane

Point is Impossible to define in context of object existing on earth or in universe.

Similarly to define a line you must know the definition of point, because by joining two distinct points you get a unique line.

Similarly a combination of infinite lines constitute a plane.

Correct Option

⇒Option C

Line, Plane, Cube

Infinite combination of line constitute a Plane.

To define cube you must be aware of term line segment.

Incorrect Option

⇒Option D

Line, Ray, Angle

A ray can't be defined without knowing about Point, because ray's one end is a point.

Incorrect Option

Option B:⇒ Point, line, Plane