shapes & angles crossword

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Across
  1. 7. a angle that's 90 degrees
  2. 8. either of two angles whose sum is 180°.
  3. 12. a line that goes forever
  4. 13. a two similar angles
  5. 15. a unit measurement of a angle
Down
  1. 1. opposite angles made by two intersecting lines.
  2. 2. a angle that is bigger than 90 degrees
  3. 3. both angles with 90 degrees
  4. 4. a angle that is equal to 180 degrees
  5. 5. identical angles
  6. 6. the apex to the angle
  7. 9. 2 things that look the same
  8. 10. a angle that is near 45 degrees
  9. 11. a half circle tool
  10. 14. a angle that adds up to 180 degrees