Lesson 3 Vocabulary

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Across
  1. 1. a flat, “unfolded” representation of a three-dimensional shape.
  2. 5. the point where two rays, lines, or line segments meet to form an angle.
  3. 8. a right prism where the bases and other faces are rectangles.
  4. 10. a three-dimensional figure whose base is a polygon and whose other faces are triangles. It is named by the shape of its base.
Down
  1. 2. a line segment where two faces meet in a three-dimensional shape.
  2. 3. a flat surface of a solid shape.
  3. 4. a three-dimensional figure with two parallel bases that are the same size and shape. The other faces are parallelograms. It is named by the shape of the base.
  4. 6. a prism where each base is perpendicular to the other faces. The faces that are not bases are rectangles.
  5. 7. the sum of the areas of all the faces of a three-dimensional figure.
  6. 9. a rectangular prism in which each face of the prism is a square.