Two-dimensional (2D) shapes are completely flat. They cannot be picked up. 2D shapes can be found printed in a book or you can draw them on a piece of paper. 2D shapes have sides and corners (also ...

Faces - A face is a flat surface on a 3D shape. For example a cube has 6 faces. Edges - An edge is where two faces meet. For example a cube has 12 edges. Vertices - A vertex is a corner where ...

The squiggly trunks and branches of Black Locust stand out in the winter landscape. Photos by Katie Finch Leaves are probably the most common feature used to identify trees. But in winter, when so ...