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You can have a tangent line for every point on a circle, so the answer is theoretically infinite.

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Q: How many lines are tangent to a circle?
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Related questions

How many lines can be drawn through a given point on a circle that is tangent to the circle?

Infinite lines because a circle has infinite lines of symmetry.


What is a theorem about two lines tangent to a circle at the endpoints of a diameter?

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The Tangent Line to Circle Theorem states that a line is tangent to a circle if and only if it's perpendicular to the circle's radius.


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That's not a question -- not even a sentence.


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