Geometry crossword puzzle

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Across
  1. 2. the point exactly in the middle segment
  2. 4. the same distance away from two points or lines
  3. 5. the point where the three triangle bisectors meet
  4. 6. the point where the three perpendicular bisectors meet
  5. 8. A ray that splits an angle into two equal angles
  6. 9. a perpendicular segment from a vertex to the opposite side or its extension
  7. 11. a triangle with all angles under 90 degrees
  8. 13. the point where the three altitudes intersect
Down
  1. 1. A triangle with one angle greater than 90 degrees
  2. 2. A segment from a triangles vertex to the midpoint of the opposite side
  3. 3. A line that cuts a segment in half at a 90 degree angle
  4. 7. a segment connecting the midpoints of two sides of a triangle
  5. 10. A triangle with one 90 degree angle
  6. 12. the point where the three medians intersect