GEO lab 1

• any circle of Earth's circumference whose center coincides with the center of Earth. 
• Shortest distance between two points on Earth

circles whose centers do not coincide with Earth's center

arc distance north or south of the equator

line connecting all points at the same latitudinal angle

distance east or west of a point on the Earth's surface measured from the center of the Earth

A line connecting all points of the same longitude

00'00" longitude runs through Greenwich, England

multiples of 15 degrees