Identify parts of 3-D shapes

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Across
  1. 3. 3-d shape made of Polygon shapes
  2. 4. where 2 faces meet
  3. 5. flat surfaces on polyhedron
Down
  1. 1. where 2 lines meet
  2. 2. polyhedron with 2 identical polygon bases
  3. 3. closed figure made of straight lines