Watch the animation below pause it and drag the blue points to change the Right Triangle.[br]What do you notice? What does this prove? How does this prove it?

Edited From [url=https://www.geogebra.org/stevephelps]Steve Phelps[/url] Original: https://ggbm.at/ZFTGX57r[br][br]

Drag the points in the sketch below.[br]What do you notice? What does this prove? How does this prove it?

Drag the points in the sketch below.[br]What do you notice? What does this prove? How does this prove it?