Nelson cut a pizza into equal parts. 4 of the pieces were eaten. 2 pieces were left over, creating an angle of 120°. What is the angle measure of 1 slice of pizza?
Since there were originally 4 equal parts in the whole pizza and 4 pieces were eaten, this means that there were originally 4 + 2 = 6 equal parts after the pizza was cut.
The angle created by the 2 leftover pieces is 120°. Therefore, each of the 6 equal parts would have an angle of 120°/2 = 60°.
So, the angle measure of 1 slice of pizza is 60°.