Math

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Across
  1. 2. the mid-value of the class interval
  2. 3. the statement,'All right angles are equal to one and other
  3. 5. the base of a pyramid is a
  4. 8. a type of chart that shows the frequency distribution of data points across a continuous range of numerical values
  5. 9. when two rays are joined together at a common poin
  6. 11. sum of the values of all the observations divided by the total no. of observations
Down
  1. 1. one of Thale's pupils
  2. 2. points that lie on the same straight line or in a single line
  3. 4. a teacher of mathematics in Egyppt
  4. 6. The numerical figures used to specify the lower and upper limits of a 'class interval
  5. 7. When the sum of two angles is 90°, then the angles are known
  6. 10. a one-dimensional figure, which has length but no width