vocabulary words 31-40.

2. a segment whose endpoints are a vertex of the triangle and the midpoint of the opposite side.
6. a region inside a circle bounded by two radii of the circle and their intercepted arc.
7. the line containing the circumcenter,centroid,and orthocenter of a triangle.
8. the point of concurrency of the three medians of a triangle. Also known as the center of gravity.
9. a circle that contains all vertices of a polygon.
11. a point where three or more lines intersect.
14. the point of concurrency of the three angle bisectors of a triangle.

1. a plane figure made up of simple shapes, or a three-dimensional figure made of simple three-dimensional figures.
3. the opposite of the reciprocal of a number.
4. a polygon for which every vertex lies on the same circle.
5. three or more lines that intersect at one point.
10. the distance along an arc measured in linear units.
12. a style of proof that uses boxes and arrows to show the structure of the proof.
13. the perpendicular segment from a vertex to the line containing the opposite side.