Triangles crosswords puzzle

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Across
  1. 5. the intersection of three medians of a triangle
  2. 6. an angle that is 90 degrees
  3. 8. a triangle with two congruent sides
  4. 14. an angle over 90 degrees
  5. 16. a line that bisects another line/ segment
  6. 17. a triangle with no equal sides
  7. 18. a triangle with all congruent sides
  8. 20. point where all three perpendicular bisectors meet
Down
  1. 1. the point where the altitudes meet
  2. 2. polygon with three sides
  3. 3. point where two lines intersect
  4. 4. the longest side of a triangle
  5. 7. the intersection point of all three angle bisectors
  6. 9. two sides that intersect to determine a right angle
  7. 10. the space between two intersecting lines
  8. 11. a perpendicular segment from a vertex of a triangle to the line containing the side opposite to the vertex
  9. 12. a segment of a vertex to opposite sides of a midpoint
  10. 13. when the measurements are the same
  11. 15. an angle under 90 degrees
  12. 19. a line that bisects an angle