crossword puzzle QUADRILATERALS

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Across
  1. 5. MULTIPLE SIDES AND ANGLES
  2. 7. AN ANGLE INSIDE A SHAPE
  3. 8. shape with four sides
  4. 9. shape with four sides
  5. 12. Large marsupial
  6. 14. a flat closed shape
  7. 16. shape with four sides
  8. 17. a closed 2-D shape
  9. 18. escribes shapes that curve outward
Down
  1. 1. wo-dimensional shape with four sides, four vertices, and four angles
  2. 2. closed shape with 4 equal sides and 4 vertices
  3. 3. all equal sides
  4. 4. Man's best friend
  5. 5. both pairs of opposite sides parallel and equal
  6. 6. four sides can be grouped into two pairs
  7. 10. Has a trunk
  8. 11. Likes to chase mice
  9. 13. Flying mammal
  10. 15. describes shapes that curve inward
  11. 16. one pair of opposite sides parallel