3. Angle Bisector A segment that cuts an angle in half

4. B A C D 12

5. G F H I

6. Point of Concurrency Incenter - The point of concurrency formed by the intersection of the three bisectors of a triangle.

7. Incenter It is the same distance from each side of the triangle to the incenter.

8. The angle bisectors of the triangle meet at point P. Find PF.

9. The angle bisectors of triangle TUV meet at point W. Find the value of d F Y E 4d - 1 V T U W 2d + 7

10. Median A segment from the vertex of a triangle to the midpoint of the opposite side. Median Vertex

11. Point of Concurrency Centroid – The point of concurrency formed by the intersection of the three medians of a triangle

12. Centroid The centroid is two-thirds of the distance from each vertex to the midpoint of the opposite side.

13. In  ABC, AN, BP, and CM are medians. A B M P E C N If AN = 12, find AE.

14. In  ABC, AN, BP, and CM are medians. A B M P E C N If CE = 16, find EM.

15. In  ABC, AN, BP, and CM are medians. A B M P E C N If EP = 3, find EB and BP.

16. Special Segments in the Coordinate Plane