I finally came up with a way to remember longitude and latitude. I had trouble remembering which was which.
I focus on the second letter of the word.
lAtitude: the A has the cross in the middle (equator) and the tip at the top. The lines are different lengths. Latitude lines are the ones going horizontally, and the lines get smaller going north and south. The lines are not the same length.
lOngitude: the O reminds me of the longitude lines that are all the same length and encircle the globe.