Multiple choice

The tangent to a circle is ..... to the radius through the point of contact.

  1. perpendicular

  2. adjacent

  3. Parallel

  4. Chord
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A Correct answer
Explanation

A fundamental theorem of geometry states that the tangent to a circle is perpendicular to the radius at the point of contact.

AI explanation

A fundamental property of circle geometry states that the radius to a point of tangency meets the tangent line at a right angle. This means the tangent is always perpendicular to the radius at the exact point where it touches the circle.

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