Friday, July 16, 2010

Free time with geometry

How to divide angle in three equal parts?


The common segment that divide two different segments?

How to draw a square with area equal with the area of circle?

How to graphically find length of a circle?

Can you understand another my aberration from below? (10x u)

Wednesday, July 14, 2010

running Calibre Xlib error (solved)

Hi

I'm trying to start Calibre (OpenSuse 11.1) and get such errors:

Xlib: connection to ":0.0" refused by server
Xlib: No protocol specified
Application initialization failed: couldn't connect to display ":0.0"

Solution:

run before starting Calibre this command:
xhost +

Note: for more details see the "man xhost" (I know you know how to linux)