Geometry Crossword Puzzle

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Across
  1. 2. to move a figure without rotating/reflecting
  2. 5. flip an object across a line
  3. 8. the point in the middle of a line segment
  4. 9. an angle that measures 90 degrees
  5. 10. (x,y) (-y,x)
  6. 11. (x,y) (2x,3y)
  7. 12. the union of two rays with the same endpoint
  8. 13. if a figure maps on to itself
Down
  1. 1. to cut in half
  2. 3. two angles whose sum equal 180
  3. 4. figure with six sides
  4. 6. reflection/rotation/translation
  5. 7. if a reflection maps the figure on itself