Puzzle Time !

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Across
  1. 2. the supplementry consective angles on parallel lines
  2. 5. quadrialterals with opposite pairs of sides equal
  3. 6. an equation in the form of ax+by+c=0
  4. 7. i am used for representation of data so that it can be used in an easy way
  5. 8. a line segment joining non-adjacent vertices of a polygon
  6. 10. triangles have the same area if they are _______ to each other
Down
  1. 1. chances of something happening B/w 0-1
  2. 3. the important statements with proofs
  3. 4. also know as the co-ordinate plane
  4. 9. a three sided polygon