Question

lines that intersect at 90? are skew lines.
true
false

Explanation:

Step1: Recall skew lines definition

Skew lines are lines in 3D space that neither intersect nor are parallel.

Step2: Analyze intersecting at 90°

Lines intersecting at 90° (perpendicular) either lie in the same plane (perpendicular lines in a plane) or could be in different planes but still intersect. Skew lines don't intersect, so lines intersecting at 90° can't be skew.

Answer:

False