Geometry
Names of Angles
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Defintion
  • Acute angle is less than 90 degrees.
  • Obtuse angle greater than 90 degrees.
  • Right angle is equal to 90 degrees.
  • Vertical angles are equal.
  • Conditions of two line are parallel.
    • Corresponding angles are equal.
    • Alternative angles are equal.
    • Angle and its supplementary angle is pi.
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