Geometry Vocab Puzzle

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Across
  1. 3. the distance around an object
  2. 6. a triangle with 2 equal sides
  3. 7. a triangle with no equal sides
  4. 9. a quadrilateral with 3 sides only
Down
  1. 1. a triangle with all equal sides
  2. 2. an angle more than 90
  3. 4. the space inside of a 3D object
  4. 5. an angle less than 90
  5. 8. the space inside of a 2D object
  6. 10. an angle that is only 90