special segments

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Across
  1. 2. the intersection of medians
  2. 5. a segment through a vertex of a triangle and is perpendicular to the side opposite the vertex
  3. 6. a line that intersects the midpoint of a side of a triangle at a right angle
  4. 8. the intersection of altitudes
Down
  1. 1. a segment that separates an angle into two equal parts
  2. 2. the intersection of perpendicular bisectors
  3. 3. a segment whose endpoints are midpoints of any two sides of a triangle
  4. 4. a segment whose endpoints are the vertex of a triangle and the midpoint of the side opposite the vertex
  5. 7. the intersection of angle bisectors