Main Topics:

Main Topics:

In Triangle Geometry we studied everything connected with 3 points / 3 lines.

*However there are also points connected with 4 points / 4 lines.*For example there is a centroid in a figure with 4 points.

There is a point with least sum of squared distances to 4 lines.

There are lots of surprises.

For example the centroid in a figure of 4 points differs from the centroid in a figure of 4 lines.

When you are interested go to the Encyclopedia of Quadri-Figures .

**What are Perspective Fields ?**

Look at the resemblance between these 3 pictures:

Question:

*Why are there so many collinearities in Triangle Geometry?*

Challenged by this question I developed a theory on Perspective Fields.

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