Perpendicular

Jargon-Free Definition

Lines that meet to make a right angle.

QCAA/AC9 Definition

Describes lines, segments or planes that intersect at an angle of .

Examples of Word Use in School

  • Draw a perpendicular line.
  • Check whether the sides are perpendicular.
  • Mark the right angle to show they are perpendicular.

Mathematical Definition

Two lines are perpendicular if the angle between them is .