math

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Across
  1. 7. the distance to the center at any point in the circle
  2. 8. a figure with total of 180 internal angles
  3. 9. the sum of each sides of figure
  4. 11. binomial coefficients triangular arrengment
  5. 12. find the GCD of (15;16).
  6. 15. ln e=?
  7. 16. directed straight line
  8. 17. one of the methods of calculating GCD
  9. 18. if a1=5, d=3, then find value of a4=?
  10. 20. cos90=?
  11. 21. the connection theorem between hypotenuse and catheters
  12. 22. if 2 to the x is equal to 2048, then find x
  13. 23. cosx/ctgx=?
  14. 24. the sum of angles for pentagonal
Down
  1. 1. the name of longest side of right-angled triangle
  2. 2. if y is 9 times x to the 3+ 3 times x +999, then find derivative of y and put 3 instead of x
  3. 3. numerical value of the sum of the angles of triangle
  4. 4. an equality of 2 ratios
  5. 5. how much is the sum of exterior angles
  6. 6. the numbers we use when counting
  7. 10. ... is equal to 2 times radius
  8. 13. sin2x=?
  9. 14. opinions accepted without proof of authenticity
  10. 17. a figure formed by 2 rays coming from a point
  11. 18. if S17=29 and S16= 14, then find the value of A17
  12. 19. i to the 2020th power