Perpendicular Lines in Geometry - Definition, Diagram & Examples #3858325 (License: Personal Use)

The image illustrates two perpendicular lines: horizontal line segment ab passing through point m, and vertical line l intersecting it at m. A right-angle symbol and the notation “θ = 90°” confirm orthogonality. This foundational concept is essential in Euclidean geometry, analytic geometry, and vector analysis.

Used in educational math content-especially middle school to college-level geometry lessons-to introduce perpendicularity, coordinate axes, and angle measurement. Matches user intent for visual learning, homework help, or concept review.