Triangles concepts and terms

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Across
  1. 2. The point where the three perpendicular bisectors of a triangle mee
  2. 5. A triangle with two equal sides
  3. 7. A triangle with all sides equal
  4. 8. The sum of the angles in a triangle
  5. 9. The point where the three medians of a triangle meet
Down
  1. 1. A triangle with one angle measuring more than 90 degrees
  2. 3. A segment from a vertex to the midpoint of the opposite side
  3. 4. The longest side of a right triangle
  4. 5. The point where the three angle bisectors of a triangle meet
  5. 6. A triangle with one angle measuring exactly 90 degrees