Multiple choice

A line can be tangent to how many circles?

  1. $1$
  2. $2$

  3. Infinite

  4. Zero
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

A line can be tangent to infinitely many circles (e.g., circles of varying radii with centers at varying distances from the line).

AI explanation

A single straight line can form a tangent to a circle at exactly one point on that circle. Because we can draw an infinite number of different circles along that same line where the line touches each one at exactly one unique point, the line can be tangent to an infinite number of circles.

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