Quadrilaterals and Where to Find Them

1234567891011121314151617181920212223
Across
  1. 1. A quadrilateral that can be inscribed in a circle
  2. 3. A quadrilateral with two pairs of adjacent equal sides
  3. 5. A line segment joining two non-adjacent vertices
  4. 6. A quadrilateral with four equal sides and four right angles
  5. 8. Sides of a parallelogram that are equal and parallel
  6. 9. The corner point of a quadrilateral
  7. 12. A quadrilateral with four right angles
  8. 14. Lines that never meet
  9. 15. A four-sided polygon
  10. 16. A quadrilateral with exactly one pair of parallel sides
  11. 19. A quadrilateral with all interior angles less than 180°
  12. 20. Two angles that add up to 180°
  13. 21. A parallelogram with four equal sides
  14. 22. Another name for a quadrilateral
  15. 23. A quadrilateral with one interior angle greater than 180°
Down
  1. 2. A trapezoid with equal non-parallel sides
  2. 4. Where the diagonals of a parallelogram meet
  3. 7. The side of a trapezoid on which it “stands”
  4. 8. A slanted parallelogram that is not a rectangle or rhombus
  5. 10. The non-parallel side of a trapezoid
  6. 11. A quadrilateral with both pairs of opposite sides parallel
  7. 13. The total of the interior angles of a quadrilateral
  8. 14. The distance around a quadrilateral
  9. 17. Angles in a parallelogram that are equal
  10. 18. A quadrilateral with no parallel sides