Follow your instructor to manipulate this right triangle to learn some of the basic features of GeoGebra.
What happens to the angle measurements as you move point A from 3 to 4? What happens to angle A when you move point B into quadrant 1? What happens to angle A when you move point B into quadrant 2? Can you find a way to make triangle ABC Isosceles? Can you find a way to make triangle ABC equilateral? When you have answered the questions above, move on to the next activity.