Math Crossword

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Across
  1. 2. distance from the center to the side of a polygon
  2. 4. segment passing through the center of a circle
  3. 5. flat surface that has no thickness
  4. 6. remaining two sides of a triangle
  5. 7. lines that intersect and form right angles
  6. 10. perpendicular bisector of a triangle
  7. 11. if then statement
  8. 12. polygon with 9 sides
Down
  1. 1. angle who's measure is between 91-180
  2. 3. longest side of a triangle
  3. 8. at least one diagonal points outside the polygon
  4. 9. accepted statement or fact