Crossword eng

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Across
  1. 2. Basic unit in mathematics, like 5 or 100
  2. 4. Math branch using symbols and letters in equations
  3. 8. A relation between inputs and outputs in math
  4. 9. Operation to increase quantity
  5. 10. Subject of angles, points, and figures
Down
  1. 1. A mathematical statement that is proven true
  2. 3. Study of relationships between angles and sides in triangles
  3. 5. Mathematical symbol that shows equivalence
  4. 6. Ancient Greek mathematician known as the 'Father of Geometry'
  5. 7. Symbol that represents subtraction