Happy New Year, Peter!

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Across
  1. 3. ___saurus.
  2. 4. Neither yew nor ewe, but ___.
  3. 6. Along with.
  4. 7. A three-dimensional solid which consists of a collection of polygons.
  5. 8. Adhere.
Down
  1. 1. Same as #4
  2. 2. A three dimensional solid object bounded by six square faces.
  3. 3. Show gratitude.
  4. 5. Because.
  5. 7. A quiescently frozen confection.
  6. 8. The drug of choice in "1984"