Math Vocabulary Crossword Puzzle

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Across
  1. 3. A polygon with three angles
  2. 4. The amount of matter in an object.
  3. 5. A four-sided shape
  4. 7. A parallelogram with 4 right angles
  5. 10. A polygon with 10 sides
  6. 12. A quadrilateral with 1 set of parallel sides
  7. 14. All of its diagonals are inside it
  8. 15. what unit=16 ounces
Down
  1. 1. A polygon with six sides
  2. 2. A quadrilateral with both pairs of opposite sides parallel
  3. 6. A part of a line that has one endpoint and goes forever in one direction
  4. 8. When line segments meet at an endpoint
  5. 9. The measure of how heavy something is
  6. 11. A 3-D polygon with 12 sides
  7. 13. What unit equals 2 cups