4N Math Puzzle!

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Across
  1. 4. angles in the same segment are _____
  2. 5. probability that event will certainly happen
  3. 6. twice of a radius
  4. 7. a diagram to represent sample space
  5. 10. a unit to measure an angle
Down
  1. 1. a theorem that can be used in right angled triangles
  2. 2. tangent is _____ to radius
  3. 3. difference between largest and smallest values
  4. 8. standard deviation can measure the _____ of data
  5. 9. value of the data in the middle