PERPENDICULAR Synonyms: 26 Similar and Opposite Words

Parallel & perpendicular lines Parallel lines are lines that never intersect, and they form the

As an adjective, the word perpendicular means at an angle of 90° to a given line, plane, or surface or to the ground

perpendicular Perpendicular Lines Theorem If two lines intersect to form a linear pair of congruent angles, then the lines are perpendicular line Proof:

perpendicular In geometry, two geometric objects are perpendicular if their intersection forms right angles at the point of intersection called a foot