Theorem 6.6 - Lines parallel to same lines are parallel to each other.jpg

2 Theorem 6.6 - Class 9 - For lines l & n with transversal corresponding angles are equal .jpg


  1. Chapter 6 Class 9 Lines and Angles
  2. Serial order wise
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Transcript

Theorem 6.6 :- Lines which are parallel to the same lines are parallel to each other. Given :- Three lines l, m, n and a transversal t such that l ∥ m and m ∥ n . To Prove :- l ∥ n. Proof :- From (1) and (2) ∠1 = ∠3 But they are corresponding angles. For lines l & n with transversal t, corresponding angles are equal Hence l and n are parallel. Hence l ∥ n Hence proved

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CA Maninder Singh is a Chartered Accountant for the past 8 years. He provides courses for Practical Accounts, Taxation and Efiling at teachoo.com .
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