Mathemetics words

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Across
  1. 5. branch of mathematics concerned with the properties and relations of points , lines ,etc
  2. 7. The total length around a two-dimensional shape
  3. 9. dealing with symbols and the rules for manipulating those symbols
  4. 10. A polygon with 3 sides and three angles
Down
  1. 1. The likelihood or chance of an event occurring
  2. 2. A statement or proposition that can be proven based on previously established statements and axioms
  3. 3. A round shape with every point equidistant from the centre
  4. 4. A number that divides another number without leaving a remainder
  5. 6. The measure of the space inside a shape
  6. 8. A mathematical statement that asserts the equality of two expressions