Geometry

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Across
  1. 4. The perimeter of a circle
  2. 8. flat two dimensional surface extends infinitely in all directions
  3. 9. - The point of intersection of lines
  4. 10. the amount of space occupied by a three-dimensional object
  5. 11. A closed plane figure with straight sides bat
Down
  1. 1. A seven sided polygon or 7-gon
  2. 2. a round plane figure where all points are equal
  3. 3. figure formed by two rays called sides of angle-, sharing a common end point.
  4. 5. when all sides of a shape are the same length
  5. 6. a 3D shape with flat faces
  6. 7. the center distance across a circle