Fun Mathematics Crossword

12345678
Across
  1. 2. MoreThanNientyDegree
  2. 4. ExactOneEightyDegree
  3. 7. LargestFiveDigitNumber
  4. 8. PollygonWithFourSides
Down
  1. 1. KarperekorNumber
  2. 3. LargestTwoDigitNumber
  3. 5. EvenNumbers
  4. 6. LessThanNientyDegree