Question

two lines intersecting at a right angle form a line. are parallel. are perpendicular. form a ray.

Explanation:

• When two lines intersect at a right - angle (90 degrees), by definition, they are perpendicular.
• Parallel lines never intersect.
• A line is a straight path with no endpoints and extending infinitely in both directions. Two intersecting lines (even at a right - angle) do not form a single line.
• A ray has one endpoint and extends infinitely in one direction. Two intersecting lines (at a right - angle or not) do not form a ray.

Answer:

are perpendicular.