Sobre el punto X370

El punto X370 es el único que cumple que su triángulo ceviano es equilátero.

Sobre el punto X370

Some results about the Hexyl Triangle

The Hexyl triangle has many properties.

We introduce some of them that can be new.

For more information, see: Some results about the Hexyl Triangle

A perspectivity related to midpoints

We take a geometrical problem by Thanos Kalogerakis as startpoint. We use barycentric coordinates to solve it and research generalizations of its configuration.

A perspectivity related to midpoints

Un problema de Armando Ricardo Michuy

Presentamos un problema de Armando Ricardo Michuy y su solución, así como
varias transformaciones del mismo usando conceptos de geometría proyectiva.
También damos una solución usando coordenadas baricéntricas.

Un problema de Armando Ricardo Michuy

Generalization of a Sangaku problem

This is a generalization of a sangaku problem.

• How to make the construction?
• What is the formula for the radius of the two congruent circles?

See details at:

Generalization of a sangaku problem.

Generalizing Pelletier points

Here is a generalization of Pelletier points of a triangle.

Download: Generalizing Pelletier points

About the A099938 sequence

This sequence contains the inverses of the radii of the circles in this chain:

See details at About the A099938 sequence