Question

Which pair of undefined terms is used to define the term parallel lines

Answer 1

The pair of undefined terms used to define parallel lines are orthogonal lines and the vanishing point. Orthogonal lines are the lines that converge at the vanishing point and suggest the illusion of depth in linear perspective art.

The pair of undefined terms used to define the term parallel lines are orthogonal lines and the vanishing point.

Orthogonal lines are the lines used in the technique of linear perspective that converge at the vanishing point to suggest the illusion of depth.

They are the lines that appear to meet on the horizon line in a piece of artwork or photograph.

The vanishing point is the point at which parallel lines in an artwork or photograph seem to converge. It is the point on the horizon where all the orthogonal lines meet.

Answer 2

Answer: A point and a line.

Explanation:

There are three undefined terms in geometry which is used to define other terms:

a) Point b) line c) Plane

The definition of parallel lines says that "The two lines are said to be parallel lines if they do not intersect each other at any point. "

Thus, to define parallel lines we have used only two undefined terms i.e. lines and a point .

Hence, the pair of undefined terms is used to define the term parallel lines : Point and Line