When you are writing, you can use words that show if the events have already happened, are happening now or will happen in the future. The past tense is used for things that have already happened ...
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 ...
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