Geometry Terms

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Across
  1. 3. Negating both the hypothesis and conclusion of a conditional
  2. 6. Point of intersection of three altitudes
  3. 7. Polygon that is a quadrilateral, parallelogram, rectangle, and a rhombus
  4. 10. Point where perpendicular bisectors intersect inside a regular triangle
  5. 13. Polygon with three sides and at least two acute angles
  6. 15. Quadrilateral with two parallel sides and two congruent sides
  7. 16. Point on a line directly in the middle
  8. 19. Point where the bisectors of a regular polygon intersect
  9. 20. Polygon with nine sides
Down
  1. 1. The longest side of a triangle
  2. 2. Statement with a true conditional and converse; uses if and only if
  3. 4. Equilateral quadrilateral; including a square in special cases
  4. 5. An accepted statement or fact
  5. 8. Relative possibility an event will occur
  6. 9. Branch of math which deals with lines, points, and planes
  7. 11. Flat surface with no thickness; extends indefinately
  8. 12. Incline between two points
  9. 14. Line perpendicular to the base of a triangle which extends to the opposite vertex
  10. 17. Closed figure with at least three sides
  11. 18. Line that cuts an angle or another line in half