Ceva's theorem

Ceva's theorem is used when you have concurrency in a triangle, ie the three line segments from the vertices pass through a common point.

The diagrams below explain this far better than text can. The first illustrates what the theorem actually means, the second describes its proof.

It is worth noting that the converse of Ceva's theorem is also true.

To download this Geogebra file click here.

To download this Geogebra file click here.