Quadrilaterals CrossWord Puzzle

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Across
  1. 1. the sum of all the angles of a quadrilateral
  2. 5. Diagonal of a parallelogram forms two congruent ___
  3. 6. A line segment connecting the two vertices of a polygon.
  4. 8. divide into two parts
  5. 10. A quadrilateral with two pairs of parallel lines
  6. 11. A quadrilateral is a parallelogram if two opposite sides are __
  7. 12. a parallelogram with four congruent sides
  8. 14. Identical in shape and size
  9. 15. a quadrilateral with one pair of opposite sides parallel
Down
  1. 2. A parallelogram with four right angles
  2. 3. four-sided polygon
  3. 4. It is bounded by two end points.
  4. 7. two angles whose sum is 180° are
  5. 9. A quadrlateral has ____ corners
  6. 13. most common type of quadrilateral