Geometry crossword project

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Across
  1. 1. a segment with end points inside of a circle
  2. 4. two sides of a triangle are equal
  3. 8. angles that add up to 180 degrees
  4. 9. angles that are equal to each other
  5. 10. a line that intersects a circle at two points
  6. 11. angles that are next to each other
Down
  1. 2. half of the diameter of a circle
  2. 3. angles that add up to 90 degrees
  3. 5. no sides of a triangle are equal
  4. 6. all sides of a triangle are equal
  5. 7. rise over run