math

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Across
  1. 4. having all sides the same length
  2. 5. weight
  3. 7. an angle between 90° and 180°
  4. 11. a solid which tapers from a circular base to a point
  5. 12. unit of measure of angles or of temperature
  6. 14. an angle whish is bigger than 180°
  7. 15. the flat side of a solid
Down
  1. 1. a quadrilateral with all sides equal
  2. 2. one thousandth of a kilogram
  3. 3. the length of the boundary of a flat shape
  4. 6. 1000 kilograms
  5. 8. the line where two faces of a solid meet
  6. 9. a regular solid with six square faces
  7. 10. angle of less than 90°
  8. 13. the middle number of a set of numbers put in order