Vocabulary word lessons 31 - 40

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