GoGeometry Action 97!
- Author:
- Tim Brzezinski
Creation of this applet was inspired by a post from Antonio Gutierrez (GoGeometry).
Feel free to move the vertices of the triangle anywhere at any time.
You can also control the measure of the pink angle using the pink slider.
How many parallelograms exist here?
Why are these quadrilaterals parallelograms?
How can we formally prove what is dynamically illustrated here?