Surface Area

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Across
  1. 2. a three-dimensional figure whose base is a polygon and whose other faces are triangles. It's named by the shape of its base.
  2. 4. the point where two rays, lines, or line segments meet to form an angle.
  3. 6. the sum of the areas of all the faces of a three-dimensional figure.
  4. 8. a flat, "unfolded" representation of a three-dimensional shape.
Down
  1. 1. a flat surface of a solid shape.
  2. 2. a three-dimensional figure with two parallel bases that are the same size and shape. The other faces are parallelograms. It's named by the shape of the base.
  3. 3. exactly the same
  4. 5. a rectangular prism in which each face of the prism is a square.
  5. 7. a line segment where two faces meet in a three-dimensional shape.