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Mathematics 17 Online
OpenStudy (anonymous):

what is the measure of AB ?

OpenStudy (anonymous):

OpenStudy (mertsj):

If a tangent segment and a secant segment intersect outside a circle, then the square of the measure of the tangent segment equals the product of the measures of the secant segment and its external portion.

OpenStudy (mertsj):

Or, using your picture: (AB)^2=25(16)

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