Google Classroom구글 클래스룸
GeoGebra지오지브라 클래스룸

Isosceles Triangle Segment

Move around points A, B, and C to change the triangle into differently-shaped isosceles triangles.
What do you observe about the angles at A on either side of AD? What do you observe about the lengths of BD and DC and where AD intersects BC? What do you observe about how AD intersects BC? What are the vocabulary terms for each of these observations about AD?