geometry

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Across
  1. 3. a quadrilateral figure having two pairs of equal adjacent sides, symmetrical only about its diagonals.
  2. 5. a flat surface on a shape
  3. 6. the point of the shape
Down
  1. 1. a solid figure with many plane faces, typically more than six.
  2. 2. the highest point; the top or apex.
  3. 4. the foundation