Which term describes two lines that intersect creating right angles?

Two lines that intersect at right angles are described as perpendicular. This term specifically indicates that the angle formed between the two lines at the point of intersection is 90 degrees, which is characteristic of right angles. In geometry, perpendicular lines are significant because they play a crucial role in defining various shapes and properties, such as in the creation of rectangles, squares, and the Cartesian coordinate system where the x and y axes are perpendicular to each other.

Understanding this concept helps reinforce the structural relationships between lines and angles in geometry, which is foundational for solving many mathematical problems related to geometry and measurement. The other terms, although related to line relationships, do not convey the same meaning: parallel lines do not intersect at all, oblique lines intersect but do not form right angles, and skew lines are non-parallel lines that do not intersect and are not coplanar.