Special Quadrilateral: Theorem 1

Interact with the applet below for a few minutes. [br]Then, answer the questions that follow. [br][br]Feel free to move the BIG WHITE POINTS anywhere you'd like! [br][color=#ff00ff]You can also adjust the size of the pink angle by using the slider. [/color]
1.
What conditional (if-then) statement can you write based upon the logical order of dynamic phenomena (i.e. actions) you observed in this applet?
2.
How does this conditional (if-then) statement compare with the conditional statement you previously wrote for [b][color=#0000ff][url=https://www.geogebra.org/m/M5a87cYW]this applet[/url][/color][/b]?
3.
Write a 2-column, paragraph, or coordinate-geometry proof of the conditional statement you wrote for (1) above.
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