Explore - Chord Length
AB and CD are chords that intersect inside circle O. Drag A, B, C, and D to adjust the lines. The text shows the lengths of the segments and their products. How are the products of the segments of the chords related?
Secant Secant Product Theorem
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Move the points on the circle to change the length of the segments. Compare the products of the whole secant segment and the external segments. Notice that you need to add the internal and external segments to get the whole. |
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