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)


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"


run before starting Calibre this command:
xhost +

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