Quadrilateral Crossword Puzzle

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Across
  1. 1. Can be applied to line line segments, angles and figures.
  2. 3. In geometry, congruent means identical in shape and size
  3. 7. Is a simple quadrilateral with two pairs of parallel sides
  4. 9. Is described as a four sided polygon
  5. 10. A quadrilateral is a parallelogram if two opposite sides are ______.
  6. 11. If the diagonal of a quadrilateral form ________ triangles, then the quadrilateral is a parallelogram.
  7. 13. Is a part of a straight line that is bounded by two distinct end points and contains every point on the line is between its endpoints
  8. 14. Imply that two things differ from each other in such a way as to indicate a definite kind of relationship
  9. 15. A quadrilateral is a parallelogram if the adjacent angles are ______.
Down
  1. 2. A diagonal is a line segment connecting two ______ of a polygon.
  2. 4. Is a line segment connecting the opposite vertices (or corners) of a polygon
  3. 5. If the diagonal of a quadrilateral forms two congruent triangles, then the quadrilateral is a ______.
  4. 6. A quadrilateral is a parallelogram if the diagonals ______ each other.
  5. 8. A quadrilateral is parallelogram if the ______ angles are supplementary.
  6. 12. The endpoints are referred to as ______.