Lesson 31-41

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