How many right angles are there in an angle that turns through 360º? Explain how you know.

Soccer practice began at 2:30 P.M. and stopped at 3:00 P.M. because of rain. During this time, through what fraction of a circle did the minute hand turn? How  many degrees did the minute hand turn? Explain.

Charlotte divided a whole pizza into 4 pieces. One piece formed a straight angle. One piece formed a right angle. Two pieces formed acute angles with the same degree measure.

A. Draw angles to represent the 4 pieces.

B. Label each angle with its degree measure.

C. Label each angle as a fraction of a circle.

D. Write an equation that represents the degree measure of the whole pizza as the sum of the measures of its parts.