Angle Bisector in an Isosceles Triangle
is an isosceles triangle. The base is segment CB and the legs are segments CA and BA. Segment AD bisects , the vertex angle of the triangle.
Drag a vertex. What do you notice about segments CD and DB?
What can you conclude that segment AD does to segment CB?
What type of angles are and ?
Write a conjecture that summarizes your findings about the angle bisector, segment AD, of the vertex angle in an isosceles triangle and its base, segment CB.