Hi, could somebody please provide a proof on how the 3 bisectors of a triangle (lines that cut each angle in half) will, if extended fully to the other side, will pass through the same point?

Obviously, two of them definitely will (because they create the point of intersection). But I need a proof on why the third one will always go through that point as well.

Thanks.

Hello,

It may be interesting to see here : Gergonne Point Theorem, Proof using Ceva's Theorem - Antonio Gutierrez. Triangle + Concurrent Cevians

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