If angle between two lines is 90° (right angle)

  Then they are perpendicular


So, XY is perpendicular to AB

∴ XY ⊥ AB



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Davneet Singh

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 14 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.