size - the physical magnitude of something (how big it is); "a wolf is about the size of a large dog"

girth - the distance around a person's body

length - the linear extent in space from one end to the other; the longest horizontal dimension of something that is fixed in place; "the length of the table was 5 feet"

sextant - a unit of angular distance equal to 60 degrees

straight angle - an angle of 180 degrees