Lesson 31-40 vocabulary crossword puzzle

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Across
  1. 4. The point of concurrency of the three medians of a triangle. Also known as the center of gravity.
  2. 6. Three or more lines that intersect at one point.
  3. 11. The point of concurrency of the three angle bisectors of a triangle.
  4. 12. The distance along an arc measured in linear units.
  5. 13. The point of concurrency of the three altitudes of a triangle.
  6. 15. A style of proof that uses boxes and arrows to show the structure of the proof.
Down
  1. 1. The line containing the circumcenter, centroid and orthocenter.
  2. 2. A point where three or more lines intersect.
  3. 3. A segment whose endpoints are a vertex of the triangle and the midpoint of the opposite side.
  4. 5. The point of concurrency of the three perpendicular bisectors of a triangle.
  5. 7. The perpendicular segment from a vertex to the line containing the opposite side.
  6. 8. The opposite of the reciprocal of a number.
  7. 9. A style of proof in which the statements and reasons are presented in paragraph form.
  8. 10. A treason inside a circle bounded by two radii of the circle and their intercepted arc.
  9. 14. A circle that contains all vertices of a polygon.