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  1. PERPENDICULAR Definition & Meaning - Merriam-Webster

    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 …

  2. What Does Perpendicular Mean? A Complete Overview

    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 …

  3. Perpendicular - Wikipedia

    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.

  4. Perpendicular and Parallel - Math is Fun

    Perpendicular means at right angles (90°) to. The red line is perpendicular to the blue line here: Here also: (The little box drawn in the corner, means "at right angles", so we didn't really need to also …

  5. What are Perpendicular Lines? Definition, Properties, Examples

    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.

  6. Perpendicular - Meaning, Examples | Perpendicular Lines Definition

    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 …

  7. What are Perpendicular Lines? Perpendicular Definition & Examples

    The definition of perpendicular is a straight line at an angle of 90° to a given line, plane, or surface. The word ‘perpendicular’ originated from the Latin word ‘perpendicularis,’ meaning a plumb line.

  8. PERPENDICULAR definition | Cambridge English Dictionary

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

  9. Perpendicular lines - Math.net

    The term "perpendicular" is used to describe more than just lines; it includes line segments, rays, the corners of shapes, and more. As long as some form of two lines meet at a point and create a 90° …

  10. PERPENDICULAR Definition & Meaning | Dictionary.com

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