If x⊥a and x⊥b, then

a || b.

a⊥y.

x || y.

z⊥a.

The correct option is 1.

Step-by-step explanation:

Given information: X⊥A and X⊥B.

It means X is perpendicular to A and X is perpendicular to B.

If two lines are perpendicular to a same line,  then both lines are parallel to each other.

Let we have three line l,m and n. If  l ⊥ m and l⊥n, then m║n.

Here X⊥A and X⊥B. So, A║B.

Therefore, the correct option is 1.

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step-by-step explanation:

pla·gia·rism

/ˈplājəˌrizəm/

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noun

the practice of taking someone else's work or ideas and passing them off as one's own.

step-by-step explanation: