Math quiz

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Across
  1. 4. an angle more than 90 degrees and less than 180
  2. 5. thereom used to find the longest side of the right angled triangle
  3. 7. one of the four operations
  4. 8. a polygon with 9 sides
  5. 9. a triangle with two equal sides
  6. 10. an equation between two variables that gives a straight line when plotted on a graph
  7. 13. one of the coefficients in multiplication
Down
  1. 1. a fraction which has more numerator than denominator
  2. 2. 10th prime number
  3. 3. middle point in a data set
  4. 6. quadrilateral in which the opposite sides are parallel and the opposite angles are equal
  5. 7. the amount to be divided in division
  6. 11. a line segment which extends infinitely in one direction
  7. 12. a form of math where letters are used to stand for numbers that are either unknown or allowed to take on many values