Question

Which pair of undefined terms is used to define a ray?

Answer 1

Coplanar, line Since parallel lines are coplanar lines that do not intersect.

Answer 2

Answer: A point and a line

Explanation:

In geometry we use three undefined terms to define the geometric terms.

The three undefined terms in geometry :- a) point b) line c) plane.

• A ray is a part of line that has only one endpoint and other end extends up to infinity.

So, the pair of undefined terms is used to define a ray are : a) point and b) line.