Geometry Crossword Puzzle

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Across
  1. 2. An angular point of polygon or polyhedron
  2. 3. segment that has one endpoint at the center and the other endpoint on the circle
  3. 6. Part of a line that starts at a particular point and extends infinitely far in one direction
  4. 9. both pairs of opposite sides parallel
  5. 11. A quadrilateral with at least one pair of parallel sides
  6. 13. two rays with a common endpoint
  7. 14. The distance around a figure
  8. 15. The space occupied by an object
  9. 16. Has no dimension, but can be visualized as a specific position in space and is usually represented by a small dot
  10. 18. It has four sides and four vertices
  11. 19. line segment joining two points on a curve
  12. 20. A quadrilateral with four congruent sides and four congruent angles
Down
  1. 1. half a circle
  2. 4. The sum of two angles that equal 90 degrees
  3. 5. Same size and shape
  4. 7. segment that passes through the center of a circle with both endpoints on the circle
  5. 8. line segment that joins to vertices in a polygon
  6. 10. parallelogram with 4 congruent sides
  7. 12. To lines which go in the same direction but do not meet or curve
  8. 17. Space Occupied by a flat shape
  9. 20. The sum of two angles that equal 180 degrees