crossword

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Across
  1. 2. numerical characterization of a two-dimensional geometric shape that shows the size of this shape
  2. 4. the branch of mathematics that studies spaces
  3. 7. mathematical statement, the truth of which is established by proof
  4. 8. the branch of mathematics that studies numbers
  5. 10. adding or subtracting this number will not change the result.
Down
  1. 1. the science of numbers, quantitative relations, and spatial forms
  2. 3. scientific assumption put forward to explain any phenomena and requiring verification, confirmation by experience
  3. 5. numbers from 1 to infinity
  4. 6. you can perform various operations with them
  5. 9. The statement is accepted as true without the need for proof