Question

Prove that two lines perpendicular to the same line are parallel to each other.

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Answer 1

Step-by-step explanation:

Let the two lines m and n each be perpendicular to the same line I.

Then,

∠1 = 90°

∠2 = 90°

∴ ∠1 = ∠2

But these angles form a pair of equal corresponding angles

∴ m || n

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