# Which undefined terms are needed to define parallel lines

Which undefined terms are needed to define parallel lines

The undefined terms are needed to define parallel lines are coplanar and line. Parallel lines are coplanar lines that do not intersect.

First off, Parallel lines are two lines that lie within the same plane and never intersect, So the undefined terms that are needed to define a parallel line are Lines, planes.

answer; -point and line explanation; the pair of undefined terms that is used to define the term parallel lines is a point and line. -there are three words in geometry that are not formally defined (undefined) these words are point, line and a plane. from these three terms all other terms can be defined. a point has a location but no size, while a plane is a flat surface and no thickness, lines are set of points extending in either direction infinitely. -points and lines are used to define parallel lines.

Try coplanar, line Step-by-step explanation: Two lines are parallel lines if they are coplanar and do not intersect. Lines that are not coplanar and do not intersect are called skew lines. Two planes that do not intersect are called parallel planes.

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Coplanar and line are the undefined terms needed to define parallel lines.