1. Chapter 14 Class 11 Mathematical Reasoning (Deleted)
  2. Serial order wise


Ex 14.5, 4 By giving a counter example, show that the following statements are not true. p: If all the angles of a triangle are equal, then the triangle is an obtuse angled triangle. Since all angles of triangle are equal, each angle is 60° But no angle greater than 90° So this triangle is not obtuse angled triangle Hence the given statement is false

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Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 10 years. He provides courses for Maths and Science at Teachoo.