Which of the following statements is true?

a. Lines of latitude measure distance east and west of the prime meridian.

b. Lines of longitude measure distance north and south of the equator.

c. Lines of latitude are also called meridians.

d. Parallels north of the equator are labeled N.

Lines of latitude are often printed to mark off angles

(not distance) north and south of the equator.

Lines of latitude are also called 'parallels', because

they are parallel to each other.

If there are any of them printed on a particular map

or globe, then each one north of the equator is labeled

with the angle it represents, and ' N '.