How is it like and unlike Earth?
Look at lattitude and longitude lines:
Are they all the same length?
Are they spaced equidistant apart?
Do they meet?
At what angles do latitude lines meet longitude
Latitude lines are parallel
Latitude lines are equally spaced
Latitude and longitude lines meet at right angles
Longitude lines meet at poles
Same shape as earth
Shapes (continents and oceans) are maintained
Relative distances and sizes are maintained
Can be used to show direction