Six points Property

March 12th, 2016

Another proof about the problem of P.Erdos

The perimeters of the cevian and pedal triangle

February 3rd, 2016

The perimeter of the Cevian triangle of a point M in a triangle ABC, is no smaller of the perimeter of the pedal triangle of the point M.

Flowers in the stone

January 30th, 2016

Flowers-in-the-stone

The Davenport-Helly’s Theorem

January 30th, 2016

A1,A2,A3,A4,A5 five points in three space. For every point O, one at least angle from AiOAj is non obtuse.

Mykonos.3

January 25th, 2016

Mykonos.3

Mykonos.2

January 25th, 2016

Mykonos.2jpg

Mykonos.1

January 25th, 2016

Mykonos.1

Mykonos

January 25th, 2016

Mykonos

The pavement

January 24th, 2016

The-pavement

The window

January 24th, 2016

The-window