The Technology and Inventions of Ancient India

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Across
  1. 4. the concept of nothing in math
  2. 5. a tool used to find the weight of two objects and compare them
  3. 7. finding the proportions of an object
  4. 8. an infinite number that is used to find the exact area of a circle
  5. 10. is a fastener that joins two pieces of fabric
  6. 12. a system of irrigating water and waste
  7. 13. the system of finding the weight of an object
Down
  1. 1. a place where fire was made to heat, cook, and smelt
  2. 2. the care and treatment of the teeth and oral regions
  3. 3. a place where ships go to resupply and be repaired
  4. 6. a hole that directs water to a sewer
  5. 9. a system of ones and zeros used to represent numbers
  6. 11. a fraction whose denominator is a power of ten and whose numerator is expressed by figures placed to the right of a point