Question

complete the sentence. two lines that do not intersect and are also not parallel are lines horizontal perpendicual skew vertical

Explanation:

• Horizontal lines: Horizontal lines are parallel to the x - axis. If two horizontal lines are in the same plane, they are parallel. If they are not in the same plane, they are skew. But the general understanding of horizontal lines in a 2 - D plane is that they are parallel.
• Perpendicular lines: Perpendicular lines intersect at a right angle (\(90^{\circ}\)).
• Skew lines: By definition, skew lines are non - parallel and non - intersecting lines. They exist in three - dimensional space.
• Vertical lines: Vertical lines are parallel to the y - axis. In a 2 - D plane, vertical lines are parallel. In 3 - D space, non - coplanar vertical lines are skew, but the general 2 - D understanding is that they are parallel.

Answer:

skew