geometry crossword puzzle

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Across
  1. 3. a shape that is a six sided polygon
  2. 7. a shape with four right angles and two opposite,congruent,parallel sides
  3. 9. a shape that has infinite angles
  4. 11. it is a small part of a circle made with a arc and two radii
  5. 14. the distance between two ends of a circle that goes through the center
  6. 15. when an object is a transformation representing a flip of a figure
  7. 16. a shape that is a eight sided polygon
  8. 18. when two angles add up to 180
  9. 19. a small part of a circle's circumference
Down
  1. 1. the amount of between two objects
  2. 2. when two objects have the same angles and side lengths
  3. 4. the space between two objects measured in degrees
  4. 5. a shape with 3 straight sides with 3 angles
  5. 6. the act or action of enlarging, expanding, or widening of a shape
  6. 8. when an object is spun around a fixed point
  7. 10. a shape that has four sides, four angles, and four vertices
  8. 11. a shape that has four right angles and four equal straight side lengths
  9. 12. the distance between the middle and edge of a circle
  10. 13. when an object is moved across a fixed area
  11. 17. when two angles add up to 90