Maths crossword puzzel

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Across
  1. 2. the y-coordinate is also called
  2. 3. Triangle in which two sides have equal length
  3. 6. Triangle in which all sides have the same length irrational number that is called non terminating non repeating decimal
  4. 8. coordinate axes divided into four parts called
  5. 9. _____ quadrant is in the form of (-ve,+ve)
  6. 11. Heron's formula is used to find ____ of the triangle
  7. 13. point of interaction of x-axis and y-axis is called
Down
  1. 1. rational and irrational numbers taken together to form
  2. 4. The x-coordinate is also called
  3. 5. number that is also called non terminating nonrepeating
  4. 7. the graph of x=a is a straight line parallel to y-axis, where a is any real number. if a=0 then it represents
  5. 10. number that is defined as terminating and nonterminating repeating decimal
  6. 12. what is the full form of s in the formula of herons formula