A closed shape has a line that ends where it started, with no gap at all. This 3rd grade open and closed shapes worksheet gives your child eight flat shapes to sort, labelled a to h. They include a circle, a triangle, a long rectangle, a trapezoid and a kite. Two of them have a gap somewhere, so your child has to look closely at every corner. Under each drawing, there are two small boxes, one for Open and one for Closed, and your child then ticks the right box, which US classes often call checking. The page sits on light grid paper with clear coloured lines. Page two is the answer key, and it shows a red check on each right answer.