Maths fun

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Across
  1. 3. A parallelogram with a right angle.
  2. 5. help us to find rational numbers between two rational numbers
  3. 6. these value of the equation
  4. 8. A number which can be written in the form of P/Q when Q is not equal to 0
  5. 10. an alphabet or term that represents an unknown number or unknown value
Down
  1. 1. a set of numbers or variables combined using the operations + , – , × or ÷
  2. 2. quadrilateral whose opposite sides are parallel.
  3. 4. A simple closed curve made up of line segment.
  4. 7. any shape that has all interior angles that measure less than 180 degrees.
  5. 9. quadrilateral with a pair of parallel sides.