Alternate interior angles are

  • Between lines i.e interior
  • In the opposite side of transversal i.e alternate

∠3 & ∠6 are alternate interior angles 

∠4 & ∠5 are alternate interior angles 


For parallel lines,


Alternate interior angles are equal.

  ∠3 = ∠6

      & ∠4 = ∠5


  1. Chapter 5 Class 7 Lines and Angles
  2. Concept wise
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Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 8 years. He provides courses for Maths and Science at Teachoo. You can check his NCERT Solutions from Class 6 to 12.