math crossword

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Across
  1. 4. a function that can change its position or its shape
  2. 7. a point that exactly in the middle
  3. 11. triangle ABC= triangleA'B'C'
  4. 13. x+y+z=180
  5. 14. two angles that equal to 90
  6. 15. the figure can change its position it doesn't need its size or shape to change for that to happen
Down
  1. 1. a flipped figure
  2. 2. in between two certain points
  3. 3. lines that equal 90
  4. 5. a point on the circle
  5. 6. ___/___
  6. 8. when two lines meet with the same point
  7. 9. A,B,C A',B',C',
  8. 10. (2,1) (5,1)(3,6)(3x,3y)
  9. 12. it varies on the size of the image change