Geometric world

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Across
  1. 4. angles angles that never touch
  2. 5. triangle 3 unequal sides
  3. 7. 4 equal sides 4 equal right angles
  4. 9. half the diameter
  5. 13. lines a line meeting another
  6. 15. angles adds up to 90 degrees
  7. 17. a line that touches a curve
  8. 18. a portion of the circumference of a circle
  9. 19. angle less than 90 degrees but more than 0
Down
  1. 1. a line segment joining a vertex to the midpoint of the opposing side.
  2. 2. greater than 90 degrees less than 180 degrees
  3. 3. line segment through a vertex
  4. 6. triangle all 3 sides are equal
  5. 7. A line that connects two points
  6. 8. the middle of a segment
  7. 10. intersects a circe at two points
  8. 11. 360 degrees
  9. 12. angles Adds up to 180 degrees
  10. 14. triangle 2 equal sides
  11. 16. a parallelogram with 4 equal sides