When two tangents are drawn to a circle from an external point, they intersect at a point which is equally distant from that point and the center of the circle.
Formula: If two tangents are drawn to a circle from an external point P, then the tangents intersect at a point X which is equidistant to P and the center O of the circle. This can be expressed as OP = OX.
Theorem 12-3
Intersecting Tangents (on the exterior)
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Short Definition
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