Do these dotted lines indicate symmetry? Some of them do, and scholars determine which ones in 12 different images. Because some of these are tricky, it may be helpful to have large versions of these shapes printed and cut out. This way, you can demonstrate by physically folding them. Better yet, call kids up to do the folding in front of the class! 

Common Core

2.G.A.3 3.G.A.2 4.G.A.3