3. a. From Activity 9, you probably found that the sum of the sizes of all the angles of a 20-gon is 3240°. If the angles of the 20-gon are all the same size, how many degrees are in each angle? b. If all the angles of a 32-gon are the same size, how many degrees are in each angle? c. If all the angles of a 102-gon are the same size, how many degrees are in each angle? laa. fannh. Tina A ativa