Vocabulary Lessons 31-40

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