Hozzászólások - Elfie

thanks

"Tetahedron" in Greek means 4 edges

Thank youuuuu

I was tought the planets in elementary school. But please, check yourself and let me know if I'm the one who is wrong here and the question is correct: http://nineplanets.org/

I came across with a question asking "Which of the following is a planet". I don't remember the other options but two of them were "Pluto" and "Mercury". Last time I checked, both Pluto and Mercury were planets. So...