Geometry crossword

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Across
  1. 2. quadrilateral with two pairs of parallel sides.
  2. 3. two-dimensional shape with four sides and four right angles
  3. 6. a point at which two or more things intersect
  4. 8. a line segment that joins the center to the boundary of a circle
  5. 9. 4 sided figure
  6. 11. a straight line segment that passes through the center of the circle
  7. 13. a unit used to measure angles
  8. 15. the amount of three-dimensional space that an object occupies
  9. 16. round, has no edges, and is a solid shape
  10. 17. never converging or diverging
Down
  1. 1. A polygon is defined as a two-dimensional shape formed with straight lines
  2. 2. at an angle of 90° to a given line, plane, or surface.
  3. 4. a simple closed shape where all points on the perimeter are the same distance from a central point
  4. 5. a specific location in space
  5. 7. the distance around the circle
  6. 10. a polygon with three corners and three sides
  7. 12. degrees) between two intersecting lines or surfaces at or close to the point where they meet.
  8. 14. a flat surface of two dimensions
  9. 15. a point where two or more lines or curves meet
  10. 16. a two-dimensional shape which has four sides of equal length