angles opposite to equal sides of triangle are equal

Author:
Mathguru
Topic:
Angles
Length of sides in a triangle change when its angles are changed. On the screen, you see a triangle ABC in red color. Observe how the length of sides in this triangle change when Angle B = α and Angle A = β are changed using their respective slide bars.
Questions to think about 1. What is the relation between sides AC and BC when we set α=β using their respective slide bars?