Geometry Puzzle

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Across
  1. 4. / A transformation that keeps size and shape the same.
  2. 7. / Numbers that show the location of a point.
  3. 9. / When both halves of a shape are the same.
  4. 11. / A number that shows enlargement or reduction.
  5. 12. / The amount of space inside a shape.
  6. 14. / A figure with four equal sides and right angles.
  7. 15. / A shape with three sides.
  8. 16. / A round shape with no sides or corners.
  9. 17. / A point where two sides meet.
  10. 18. / Turning a figure around a point.
  11. 19. / A change in the size of a figure.
Down
  1. 1. / A mirror image of a figure.
  2. 2. / A shape with only one pair of parallel sides.
  3. 3. / A line from the center of a circle to its edge.
  4. 5. / The amount of space a solid takes up.
  5. 6. / A movement that slides a figure without changing its shape.
  6. 8. / A line that goes across the center of a circle.
  7. 10. / The total length around a figure.
  8. 13. / A figure with opposite sides equal and four right angles.
  9. 19. / Unit used to measure rotations.