If angle between two lines is 90° (right angle)
Then they are perpendicular
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So, XY is perpendicular to AB
∴ XY ⊥ AB
Last updated at March 11, 2019 by Teachoo
If angle between two lines is 90° (right angle)
Then they are perpendicular
So, XY is perpendicular to AB
∴ XY ⊥ AB
Perpendicular to a line through a point on it
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