Quadrilaterals and Polygons

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Across
  1. 2. A polygon with 8 sides.
  2. 4. A quadrilateral with one pair of parallel sides.
  3. 6. The internal angles of a triangle sum to one-hundred and ___ degrees.
  4. 8. A polygon with 9 sides.
  5. 10. The internal angles of a quadrilateral sum to three-hundred and ___ degrees.
  6. 12. A four-sided polygon.
  7. 13. A parallelogram with four equal sides with no right angles.
  8. 14. The parallel sides of a Trapezoid.
  9. 15. Interior Angles of a quadrilateral with no common sides.
  10. 17. Opposite Sides of this quadrilateral are not parallel.
  11. 18. A 3 sided polygon.
  12. 19. A 5 sided polygon.
  13. 20. Line Segments that connect two nonconsecutive vertices.
  14. 21. A polygon with 6 sides.
Down
  1. 1. The two sides of a trapezoid that is not parallel.
  2. 3. A quadrilateral with no parallel sides.
  3. 5. A polygon with 10 sides.
  4. 7. The interal angles of an octagon sum to One-___ and eighty degrees.
  5. 9. Sides of a Quadrilateral that do not have common endpoints.
  6. 11. A quadrilateral with two pairs of parallel opposite sides.
  7. 13. A parallelogram with four right angles, but not all sides are equal.
  8. 16. A rhombus with four right angles and four equal sides.