If angle between two lines is 90° (right angle)
Then they are perpendicular
So, XY is perpendicular to AB
∴ XY ⊥ AB
Subscribe to our Youtube Channel - https://you.tube/teachoo
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
Subscribe to our Youtube Channel - https://you.tube/teachoo
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