Quadrilateral Crossword

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Across
  1. 5. What do you call a four-sided polygon?
  2. 6. The branch of Mathematics that handles the relationship of angles, points, measurements and the like.
  3. 8. These are often referred to as 'enemy lines'.
  4. 10. Two things differ from each other.
  5. 12. Opposite vertices of a polygon.
  6. 14. It divides the shape into two equal sides.
  7. 15. It contains every point on the line that is between its endpoints.
Down
  1. 1. It connects opposite vertices.
  2. 2. It means 'equal'.
  3. 3. A quadrilateral that has two pairs of parallel sides.
  4. 4. Congruence can be applied to line segments,_____, and figures.
  5. 7. Another name for shape.
  6. 9. Endpoints are referred to as?
  7. 11. What is a square?
  8. 13. They are called segments.