Numerical Prefix

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Across
  1. 1. a five sided shape
  2. 3. a bike that has three wheels
  3. 4. glasses with two lenses
  4. 7. a bike that has one wheel
  5. 9. a bike that has two wheels
  6. 10. a dinosaur with three horns
Down
  1. 2. a device with three legs to help stand
  2. 3. a shape with three sides
  3. 5. a mythic creature with a single horn
  4. 6. four siblings born on the same day
  5. 8. a shape with four sides