maths pitching

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Across
  1. 3. a positive and negative number
  2. 5. perimeter of a circle
  3. 6. lines that are equidistant from each other and never meet in cartesian plane
  4. 7. a line that joining two vertices
  5. 9. TRIANGLE THAT has both two equal sides and two equal angles
Down
  1. 1. a number that divide the number exactly or evenly
  2. 2. polygon with 4 sides
  3. 4. name the angles that is less than 90 degree
  4. 8. number of line of symmetry in letter H
  5. 10. square roots of 49