Intersecting Chords Theorem

​
AP×BP
0.61
CP×DP
0.61
Let P be a point inside a circle. Let AB and CD be two chords through P. Then, AP
×
BP = CP
×
DP.
Drag the orange points to change the chords.

External Links

Chord (Wolfram MathWorld)

Permanent Citation

Jay Warendorff
​
​"Intersecting Chords Theorem"​
​http://demonstrations.wolfram.com/IntersectingChordsTheorem/​
​Wolfram Demonstrations Project​
​Published: March 7, 2011