Numeric Enigma

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Across
  1. 1. - Lines or segments that meet at a right angle.
  2. 3. - Whole number without a fractional part.
  3. 5. - A closed figure with straight sides.
  4. 8. - An expression involving roots, such as square or cube roots.
  5. 9. - A triangle with two sides of equal length.
  6. 10. - An equation of the second degree.
Down
  1. 2. - The bottom part of a fraction, representing the total number of equal parts.
  2. 4. - Having the same size and shape.
  3. 6. - The longest side of a right-angled triangle.
  4. 7. - A number greater than 1 with no positive divisors other than 1 and itself.