Maths

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Across
  1. 4. which number system contains every number except zero
  2. 6. name the polygon which has 15 sides
  3. 7. how many sides does a heptagon have?
  4. 10. What is the line called which cuts a pair of Parallel Lines?
  5. 11. which number does not have a reciprocal
  6. 15. Who is known as human computer
  7. 16. What is the name of the longest side of a right angled triangle
  8. 18. in which number system is there no symbol for zero
  9. 20. Who created the formula: (root)s(s-a)(a-b)(s-c)
  10. 21. what shape is a Rubik’s cube
  11. 22. The numbers 3,4,5 when calculated in Pythagoras theorem provide a perfect right triangle where 3^2 and 4^2 are equal to 5^2, Therefore the numbers 3,4,5 are a?
  12. 23. what is the place of 5 in 6952
Down
  1. 1. Most Famous theorem of triangles in geometry?
  2. 2. What is an angle greater than 280 degrees but less than 360 degrees
  3. 3. Who is known as the prince of mathematics in India?
  4. 5. What is the other name of perimeter of a circle?
  5. 8. Who invented the Radical Symbol (root symbol)
  6. 9. Who invented zero?
  7. 12. a figure which has no sides and no corners
  8. 13. What is the other name of the multiplication symbol
  9. 14. Which Greek Mathematician Wrote the Book ‘Elements’?
  10. 17. Name of the symbol(triangle)
  11. 19. what is the mathematics device which consists of beads