Answer:
Planet: The object orbits the sun
Not planet: The object is a satellite
Planet: The regions surrounding the object are free from debris
Not Planet: The object is triangular in shape.
Step-by-step explanation:
A planet is characterized as:
Spheroidal (or at least big enough to be round-ish)
It should orbit the sun (not other planets, so satellites like the moon is not considered as a planet)
It should have no debris, or cleared of debris around its orbit
Although there is now the dwarf planet category, it satisfies almost all charateristics to be considered a planet, except the cleared of debris part.