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Intersecting Lines and Angle Measures

Related Links

  • Lines are always straight and never ending
  • When two or more lines cross each other, they are intersecting lines
  • An angle has two sides and a vertex
  • The degree of the angle is the angle measure
  • Acute angles are less than 90 degrees
  • Right angles are 90 degrees
  • Obtuse angles are greater than 90 degrees
  • Vertical angles: Two opposite angles formed by intersecting lines
  • Adjacent angles: Angles next to each other and have a common vertex and side
  • Complementary angles: Two angles that add up to 90 degrees
  • Supplementary angles: Two angles that add up to 180 degrees

Intersecting Lines and Angle Measures

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Mathematics: Basic Math