which degree of longitude share the same degree?
At the equator, a degree of longitude is the same as a degree of latitude, about 69 miles (111 km).
Lines of longitude run from pole to pole, crossing the equator at right angles. All lines of longitude are equal in length. Each line of longitude also is one half of a great circle. There are 360 degrees of longitude (+180° eastward and −180° westward.
