geometry

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Across
  1. 3. corners
  2. 9. smaller than obtuse,bigger than acute
  3. 10. smaller than right
  4. 11. (challenge word) shape with 4 angles
  5. 12. a shape with two sides of parallels
  6. 14. where angles meet
Down
  1. 1. an endless shape
  2. 2. a right angle of a kind
  3. 4. a shape with no openings or curves
  4. 5. larger than a right angle
  5. 6. segment a line with endpoints
  6. 7. a shape with three angles
  7. 8. lines that won't meet
  8. 13. a line with one endpoint