Triangle Centers  Table of
Content 5




Geometric art of triangle centers visual summary
Delaunay Triangulation, Circular Random Composition, iPad Apps. 

Problem 32.
Triangle, Cevian, Incircles, Tangents. 

Problem
31. Right Triangle, Incircle, Collinears.
Problem
30. Right Triangle, Incircle, Inradius. 

Proposed Problem 29.
Right Triangle, altitude, incircle and inradius. Ten conclusions. 

Problem 29:
Geometry Help.
Facts you should know. 

Heron's Formula with medians 

Proposed Problem 28
Right Triangle, altitude, incircles and
inradius. 

Proposed Problem 27
Right Triangle, incircles and inradius. 

Proposed Problem 26
Right Triangle, altitude, incircles and
inradius. 

Proposed Problem 25
Right Triangle, altitude, incircles and
inradius. 

Proposed Problem 24
Right Triangle, altitude, incircles and
inradii. 

Proposed Problem 23
Right Triangle, altitude, incircles and
inradii. 

Proposed Problem 22
Right Triangle, altitudes, incircles and
inradii. 

Proposed
problem 21
Acute triangle, orthocenter, diameter, tangents. 

Proposed problem
20
Right Triangle, incircles and inradii. 

Proposed problem 19
Right Triangle and Excenter 

Heron's Formula.
Key facts and
a purely geometric
stepbystep proof.


Napoleon's Theorem. A purely geometric
proof. It uses the Fermat point to prove Napoleon without
transformations.


The Bevan Point: Puzzle 