A) Latitudes are imaginary horizontal lines that circle the Earth, parallel to the Equator. They measure the distance north or south of the Equator, ranging from 0^ at the Equator to $90^

Here are the answers to your questions:

1. a) Latitudes are imaginary horizontal lines that circle the Earth, parallel to the Equator. They measure the distance north or south of the Equator, ranging from $0^\circ$ at the Equator to $90^\circ$ at the poles.

   b) The angular measurement of the Equator is $\boxed{\text{0 degrees}}$.

   c) The angular measurement of the Arctic Circle is $\boxed{66^\circ 30' \text{ N Latitude}}$. The angular measurement of the Antarctic Circle is $\boxed{66^\circ 30' \text{ S Latitude}}$.

2. The Equator is an imaginary line of latitude that circles the Earth at $0^\circ$. It is the longest line of latitude and divides the Earth into the Northern Hemisphere and the Southern Hemisphere.

3. To draw a picture of a globe and indicate the major latitudes:

   • Draw a circle to represent the Earth.
   • Draw a horizontal line across the middle, labeling it the Equator ($0^\circ$).
   • Above the Equator, draw two parallel lines: one at $23.5^\circ$ N, labeled Tropic of Cancer, and another at $66.5^\circ$ N, labeled Arctic Circle.
   • Below the Equator, draw two parallel lines: one at $23.5^\circ$ S, labeled Tropic of Capricorn, and another at $66.5^\circ$ S, labeled Antarctic Circle.
   • Mark the top point as the North Pole ($90^\circ$ N) and the bottom point as the South Pole ($90^\circ$ S).