Vivani Action!
The following applet illustrates Vivani's Theorem without segment lengths and without angle measures.
Be sure to move the ORANGE POINT and the BIG RED POINTS anywhere you'd like prior to (and even after) you start dragging the slider. Carry out this action as many times as you'd like.
Without opening up another tab on your internet browser, describe Vivani's Theorem in your own words. That is, write a conditional statement that conveys what this applet illustrates.