Quadrilaterals Crossword

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Across
  1. 4. The inside of a shape.
  2. 7. A quadrilateral with two pairs of parallel sides.
  3. 9. The outside of a shape.
  4. 11. A figure formed by two rays meeting at a point.
  5. 14. A line segment connecting opposite vertices.
  6. 17. A quadrilateral with four right angles.
  7. 18. To divide something into two equal parts.
  8. 19. Having the same size and shape.
  9. 20. Lines that never intersect.
Down
  1. 1. The point halfway along a line segment.
  2. 2. Lines that intersect at 90 degrees.
  3. 3. A polygon with four sides.
  4. 5. A quadrilateral with four equal sides.
  5. 6. A point where two sides meet.
  6. 8. A quadrilateral with at least one pair of parallel sides.
  7. 10. Two angles that add up to 180 degrees.
  8. 12. A quadrilateral with four equal sides and four right angles.
  9. 13. A closed shape made of straight sides.
  10. 15. A quadrilateral with two pairs of adjacent equal sides.
  11. 16. A line segment forming part of a polygon.