MATHS CROSSWORD PUZZLE

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Across
  1. 6. when a pair of linear equation has a unique solution, lines are....
  2. 8. divide a parallelogram into 4 triangles of equal areas.
  3. 9. collection of points in a plane equidistant from a fixed point.
  4. 10. when 2 linear equations has no solution, lines are....
Down
  1. 1. area is the half of the product of length of diagonals.
  2. 2. a three sided polygon.
  3. 3. divide a triangle into 2 triangles of equal areas.
  4. 4. sum of pairs of opposite angles of...... quadrilateral is 180 degree.
  5. 5. longest chord.
  6. 7. a quadrilateral with four 90 degree angles.