In traversing by included angle method, which of the following is correct?

i. If the direction of progress is counter clockwise, the included angles measured clockwise are interior angles.

ii. If the direction of progress is clockwise, the included angles measured clockwise are interior angles.

iii. If the direction of progress is counter clockwise, the included angles measured clockwise are exterior angles.

iv. If the direction of progress is clockwise, the included angles measured clockwise are exterior angles.