Maths

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Across
  1. 2. I am the smallest time unit
  2. 4. I am the dividend when divisor is 20 & remainder 0
  3. 6. i have three sides & a complete plane surface
  4. 7. I am the boundary to a two-dimensional shape
  5. 8. I am the count of 2 plus 2
Down
  1. 1. I am equal to an hour
  2. 2. Not a natural number but when in makes it whole
  3. 3. Quotient when 42 is divided by 7
  4. 4. I am the divisor of 120 with remainder zero
  5. 5. I have one extra day in a leap year