Quadrilateral puzzle

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Across
  1. 2. Both diagonals lie in the interior
  2. 4. When two lines never meet, they are ....
  3. 7. Corners are called as...
  4. 8. One angle of a quadrilateral is more than 180
  5. 9. Six sided closed figure
  6. 10. A polygon made up of 3 triangles
Down
  1. 1. An angle formed by extending of a side
  2. 3. Line segment joining opposite vertices
  3. 5. Sides are called as...
  4. 6. It has 10 interior angles