Geometry crossword

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Across
  1. 1. / A line that connects two points on a circle
  2. 5. / A plane shape with at least three sides
  3. 7. / The longest chord on a circle
  4. 9. / Synonym for Ratio
  5. 11. / Make a shape smaller
  6. 14. / Moving the shape
  7. 16. / The relation between two numbers
  8. 18. / rotate a shape
  9. 19. / A kind of chord, but the line is made up by two rays
Down
  1. 2. / Making a shape bigger or smaller
  2. 3. / A square or triangular base and sloping sides that meet in a point at the top
  3. 4. / Two or more transformations
  4. 6. / Make a shape bigger
  5. 8. / The point where two rays meet to form a angle
  6. 10. / A shape with five sides
  7. 12. / Shapes with straight sides, no curves
  8. 13. / A solid geometric figure whose two end faces are similar, equal, and parallel figures, and whose sides are parallelograms
  9. 15. / Reflect a shape
  10. 17. / A line that touches exactly one point one a circle
  11. 20. / Synonym for middle