A line is said to be perpendicular to a plane if it is perpendicular to every line in the plane that it intersects. This definition depends on the definition of perpendicularity between lines.

vertical, perpendicular, plumb mean being at right angles to a base line. vertical suggests a line or direction rising straight upward toward a zenith. perpendicular may stress the straightness of a line …

A perpendicular is a straight line that makes an angle of 90 ° with another line. 90 ° is also called a right angle and is marked by a little square between two perpendicular lines as shown in the figure given …

A perpendicular is a line that intersects another line at a right angle. Learn the definition of perpendicular, symbol, properties, real life examples, and more.

PERPENDICULAR definition: 1. at an angle of 90° to a horizontal line or surface: 2. at an angle of 90° to another line or…. Learn more.

Oct 23, 2025 · In this guide, we’ll take a closer look at what perpendicular means in math and geometry through clear definitions, easy-to-follow visuals, side-by-side comparisons, a fun little quiz, and …

PERPENDICULAR definition: vertical; straight up and down; upright. See examples of perpendicular used in a sentence.

Definition of perpendicular adjective in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

Use perpendicular to describe lines, angles, and direction. In geometry a perpendicular angle is 90 degrees, a perfect L. On a compass, East and North are perpendicular to each other. The term can …

Perpendicular lines are two distinct lines that intersect each other at a 90° angle (right angle). The term 'perpendicular' comes from the Latin word 'perpendicularis,' meaning a plumb line.