Crossword

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Across
  1. 3. Key to finding rectangle
  2. 4. A continuous line drawing that ends where it begins
  3. 6. One-sided surface related to the proof
  4. 8. Describes intersecting surface
  5. 9. Shape guaranteed within squiggle
  6. 10. Study of shapes and spaces
Down
  1. 1. Another name for a squiggle
  2. 2. Mapping of squiggle points
  3. 5. Branch of math involved
  4. 7. Mathematical argument for rectangle existence