Help sort shapes in a shape factory. Look at examples of shapes to see if they belong in a polygon group, or set. Examine examples of shapes that do not belong in the set. What features do you think ...

Two-dimensional (2D) shapes are completely flat. They cannot be picked up. A polygon is a 2D shape with straight sides that meet at vertices. Polygons have names that show the number of sides they ...

Do you know what a circle looks like? Can you name some other shapes too? A two dimensional (2D) shape is made of lines. Sometimes the lines are curved and sometimes the lines are straight. The lines ...

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