3 problems about polygons.

1,There are 4 equal sides and parallel lines. What is this shape?  
2.How many sides does a hexagon have?
3.Can you give the diffrences between a circle and a pentagon?  

6a friend (classmates)

Se bin,Charlie,Alex,Mark,DIckson,Khoa,Coang,Duc minh,Linda,Ji hyun,so yeon,naima,nuna.
and last my teacher Miss Rita