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Right Angle

Explore RightAngle on MathWorld


A right angle is an angle that measures exactly 90 degrees.

Right angle is an elementary-school-level concept. It is listed in the California State Standards for Grade 3.

Prerequisites

Angle: An angle is a measure of the amount of rotation about the point of intersection of two lines or line segments that is required to bring one into correspondence with the other.

Classroom Articles on Pre-Algebra (Up to Elementary-School Level)

  • Associative
  • Integer
  • Cartesian Coordinates
  • Line
  • Commutative
  • Power
  • Decimal Expansion
  • Prime Factor
  • Distributive
  • Prime Factorization
  • Equal
  • Prime Number
  • Fraction
  • Quotient
  • Function Graph
  • Rounding