Which represents the measures of all angles that are coterminal with a 500° angle? (40 + 360n)° (140 + 360n)° (220 + 360n)° (320 + 360n)°

Check the picture below.

so a full circle is 360°, then if we just go 140° more, we'll be landing at 500°.

If we go from the 140° location and add say 360°, well end up 500, if we add another 360°, we'll be at 860° or the same location of 140° and 500°, and if we add again 360° we'll be landing on the same spot again and again.

(140 + 360n)°.   where "n" is an integer.

only 10/60 isn't equivalent

hope this : )