A _______ intersects a circle in exactly one point.
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A _______ intersects a circle in exactly one point.
chord
arc
tangent
secant
A tangent is defined as a line that touches a circle at exactly one point.
A chord intersects a circle at two points, and a secant line also intersects at two points. A tangent is uniquely defined as a line that touches the boundary of the circle at exactly one point. Therefore, a tangent intersects a circle in exactly one point.