Submitted by Mr. Donald C. Albin Jr.
Professional Educator
www.donaldalbin.99k.org
All of the angles are of a fixed measure.
Directions: Move points 'A' and 'B' to adjust the size of the triangle.

Questions to promote inquiry:

As you move points 'A' and 'B', how do the measures of angles 'A', 'B', and 'C' change?

How would you describe the changes that occur in the triangle as you move points 'A' and 'B'?

Given the answers from the previous two questions, what does this mean about whether the AAA Congruence Theorem works?