From circle , we know that if two tangent segments are drawn from the same external point, then the segments are congruent.
Here, point is external to circle , and the segments and are tangent to the circle at points and , respectively.
Therefore, by the tangent segment congruence theorem, we have
Thus, the segment that is congruent to is .
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To determine a segment that is congruent to , we can utilize the properties of tangents drawn from an external point to a circle.
Since is a point outside both circles and , and is tangent to at point and to at point , we know that the segments and are both tangent to their respective circles from point .
In addition, the segment is tangent to circle at point and to circle at point . This means and are also tangents from point .
By the tangent segment theorem, we know that the lengths of tangents from a common external point are equal. Thus, we have: