Geometry Vocab Puzzle

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Across
  1. 4. a triangle with two equal sides
  2. 5. something that bisects
  3. 8. two angles that add up to 90
  4. 10. angle that is less then 90
  5. 11. infinitely long collection of points
  6. 13. straight up and down
  7. 16. two angles that add up to 180
  8. 17. a triangle with different length sides
  9. 18. a triangle with same length sides
  10. 19. the exact middle point
  11. 20. corresponding angles
Down
  1. 1. moving something without ruining its figure
  2. 2. lie on the same line
  3. 3. angle that is greater then 90
  4. 6. part of a whole line (ex. AB or AC)
  5. 7. on the same plane
  6. 9. a line that intersects multiple lines
  7. 12. two lines that don't merge
  8. 14. flat surface that extends infinitely
  9. 15. a angle that is the same but flipped