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Tangent Secant Segment Power Theorem

1. Fill in the table below . For each trial, move any of the point C, B, or D.

1. Fill in the table below . For each trial, move any of the point C, B, or D.
2. Compare BE(CE) and . 3. Complete this statement: If a tangent segment and a secant intersect outside the circle, then the square of the length of the tangent segment is ____________ to the product of the lengths of the secant segment and its external part.

Proof of the theorem is on the link below.

Video showing examples applying the theorem is found below.