If you look close up on a tortoises head, they have one little hole at either side of there head, like us there have noise holes witch they breathe out of. I hope i helped. :D Tortoises Do have noses (and mouths) you know! If you look closely at a tortoise's face, it has two little nostrils!
Well you could always go onto google images and look it up but tortoises are animals with a hard shell on their back which look like an upside down bowl. They are reptiles and are sometimes slow but not often, with saggy dry skin. They are usually brownish in colour.